The vowel sounds of English all have several different symbolizations in the present heteric orthography. (heterophones-homophones) The following list was compiled with the help of A. Ellis, Plea for Phonetic Spelling, 1848. The examples given relate to British RP.

 [a:] a in father, au in aunt, ar in card, er in clerk, ear in heart, uar in guard

 [e] a in many, ai in said, ay in says, e in let, ea in head, eo in leopard, ie in friend, u in bury, ue in guess [head is OK as an extended e, the others have to change to match e or ea.  menny, sedd, sez, leaperd, frend, berry, gess.  gu is an orthographic modification gess=jess. as in gem, gentry, gent, gesture. it is another i,e, rule.  as in cent and city.

 [i] e in pretty, ea in guineas, ee in breeches, ei in forfeit, i in pit, ia in marriage, ie in sieve, 
      o in woman,  u in busy, ui in build, y in physics, ey in money 
      [pritty, guiniz, brichez, forfit, marrij, siv, wimmen, bizzy, bild, fissics, munny].

 [o] a in want, au in laurel, o in on, ou in cough, ow in knowledge
       [waant, lorel, on, coff, nolaj]  weunt wo:nt

 [u] o in woman, oo in wood, ou in would, u in bull       [list of 18 ways to spell /u:/]
       wuman, wud, wud, bul  huk, 

 [æ] a in sat, ai in plait, plaid, 
        [satt, platt, pladd, saet] 

 [L] u in humble, o in son, oe in does, oo in flood, ou in double 
       [u.  hummbl, sunn, duzz, fludd, dubbl]  [alt. san, daz, flad]

 [i:] ae in minutiae, e in be, ea in each, eae in fleaed, ee in feet, ei in conceit, eo in people, ey in key, 
       eye in keyed, oe in foetus, ie in grief, i in magazine, uay in quay, ui in mosquito
       [minushii,  bii, iich, fliid, fiit, consiit, piipl, kii, kiid, fiitas, griif, maggaziin, kii, moskiiteu ø]

 [o:] a in fall, aor in extraordinary, au in haul, aw in awful, or in fork, oa in broad, ou in ought

 [u:] ew in brew, ewe in brewed, eu in rheumatic, o in do, oe in shoe, oeu in manoeuvre, oo in too, 
        ooe in wooed, ou in soup, u in ruling, ue in true, ui in fruit, wo in two  [18 ways]

 [ai] a in naive, ai in aisle, ei in height, ey in eying, i in bind, ie in die, ui in guide, uy in buy, y in fly, ye    
        in dye [naiiv, ail, hait, aiying aing  aiq, baind dai, gaid, bai, flai, dai]. nYiv, Yl, hYt, Yiq,Yying dY

 [au] ou in noun and aloud, ow in cow, owe in allowed  [naun, cau, alaud]  all OK

 [ei] a in mating, ai in pain, ao in gaol, au in gauging, ay in play, aye in played, ea in great, ei in veil, 
       ey in they, eye in conveyed [meiting, pein, geijing, pley, pleyd, greit, veil, they, conveyd]

 [oi] oi in noisy, oy in boy, oye in enjoyed, uoy in buoy, uoye in buoyed

 ['u] ao in pharaoh, au in chauffeur, eau in beau, eo in yeoman, ew in sew, ewe in sewed, o in post, 
         oa in oats, oe in doe, oo in brooch, ou in soul, ow in know ø [eu=q ø]
         [ farrø, shøfer, bø, yøman, sø, pøst, øts, dø, brøch, søl, nø nolaj ]
         [ faereu, sheufer, beu, yeuman, seu, peust, euts, deu, breuch, seul, neu, nolaj ]

 ['] a in brilliant, eo in dungeon, io in cushion, o in motion, iou in conscious, oi in tortoise, 
       eu in amateur, u in suffice, oa in cupboard, ou in viscous, e in condiment
       brillyant, dunnjan, cushan, meushan, conshas, tortas, ammater, safais/suffais, cubbard, vishas, 
       condimant,   [sc retained as sh in conscious, no longer scip science  was this ever sheeans]

See Chris Upward's longer list of heterografs.

(Note that, at least in the case of RP, if not of other accents, the list could be made still more ample by the inclusion of the combinations in r: ar in start, eer in beer etc., even ire in fire.)

a: [ei] in hating, [a:] in father, [o:] in water, [e] in many, [æ] in hat, [o] in want, ['] in brilliant, [e] in various, [i] in village.     heiting, faather, woter, menny, hatt, wont, brillyant, vaerias, villaj/villij

ae: [i:] in minutiae, [e] in aerial, [ei] in Israel    izraael?  izreili

ai: [ei] in sail, [e] in said, [æ] in plait, [eii] in dais, [ai] in aisle, [aii:] in naive

ao: [ei] in gaol /jeil/, [eio] in chaos [kaos], [u/ou] in pharaoh /ferrow/    [ferlow]

au: [ei] in gauging /geijiq/, [a:] in aunt, [o:] in haul, [u/ou] in chauffeur /showfr/, [o] in laurel

aw: [o:] in awful  /olfwl/   paw, crawl [see all]  aa+u  close to [oh]  sao=sau

ay: [ei] in pray, [e] in says  [prey, sez]

e: [i:] in be, [i] in pretty, [e] in let, ['] in open   bi, pritty, lett, oupen/eupen

ea: [i:] in heal, [ei] in great, [i] in guineas, [e] in head, [i:æ] in react, [i] in area, [i:ei] creator

eau: [u/ou] in beau, [ju:] in beautiful /byutifwl/   [ref: eh+ah+u  @u]

ee: [i:] in feet, [i] breeches

ei: [i:] in conceive, [ei] in veil, [i] in forfeit

eo: [i:] in people, [u] yeoman, [i] in galleon, [e] in leopard, ['] in dungeon, [i:] in theologian, [i:o] in theology

eu: [ju:] in feud, [i:ju:] in reunion

ew: [u] in sew, [u:] in brew, [ju:] in new    [ref: @u]

ey: [i:] in key, [ei] in they, [i] in turkey, [ai] in eying

i: [i] in sin, [ai] in bind, [j] in onion

ia: ['] in parliament, [iei] in mediate, [i] in carriage, [aiei] in hiatus, [iæ] in triviality, [j] in Britannia

ie: [i:] in grief, [i] in sieve /siv/, [e] in friend /frend/, [ai] in lie, [i:i] in earliest /3:li:'st/, [ai] in science, 
['] in conscience /ka:nsh'ns/ /connsh'ans/   science is a word repronounced rather than respelled.

ieu: [u:] in lieu, [ef] (!) in lieutenant

iew: [ju:] in view  /vyu/

io: ['] in motion, [iu] in mediocre /mediocr/, [io] in mediocrity, [ai] in violation, [aio] in ionic, [j] in million /millyn/

o: [u] in go, [u:] in do, [i] in women, [o] in on, [] in son, [u] in woman, [3] in colonel

oa: [o:] in broad, ['u] in coal, ['uei] in oasis, ['uæ] in coagulate

oe: [i:] in foetus, [u] in doe, [u:] in shoe, ['] in does, ['ui] in poet

oeu: [u:] in manoeuvre

oi: [wa:] in chamois, ['] in connoisseur, [oi] in noisy, [ui] in stoic, [u:i] in doing

oo: [u] in brooch, [u:] in brood, ['] in flood, [u] in wood, [u:] in zoological, [u:o] in zoology

ou: [o:] in ought, [u] in soul, [u:] in soup, [o] in cough, [L] in doubling,  ['] in various,
      [u] in would, [au] in noun

ow: [u] in know, [o] in knowledge, [au] in now

oy: [oi] in boy

u: [u:] in rule, [i] in busy, [e] in bury, [] in cut, [u] in pull, [ju:] in using, [w] in persuade

ua: [a:] in guard, [wei] in persuasion, [wa:] in guano

uay: [i:] in quay

ue: [u:] in true, [e] in guess, [u] in cruel, [ju] in duel

eue: [u:] in queue

ui: [i:] in mosquito, [u:] in fruit, [i] in build, [ai] in guiding, [wi] in languid, [wi:] in suite, [u:i] in fruition

uoy: [oi] in buoy

y: [i] in marry, [:] in myrrh, [ai] in fly

ye: [ai] in dye, [ai:] in hyena

Nearly all consonant combinations in the present heteric spelling have multiple sound values, despite the fact that defenders of this spelling point to the consonant letters as having fairly constant values. 

Dewey compiled a longer list and showed that the typical consonant can have 14 different sound values in the traditional spelling.

b: [b] in be, mute in lamb

c: [k] in can, [s] in cell, [S] in special and suspicion, [ ] mute in yacht

ch: [tS] in chain, [dZ] in spinach, [k] in architect, [S] in chef, mute in yacht

d: [t] in sucked, [d] in deep, [dZ/j] in soldier, mute in handkerchief  suckt, diip, soljer, myuut, hankerchiif

f: [f] in foe, [v] in of, mute in stiff ?

g: [dZ] in gem, [g] in geese, [Z] in rouge, [ ] mute in gnaw

gh: [p] in hiccough, [g] in ghost, [f] in laugh, mute in straight

h: [h] in hat, [] in eighth

j: [dZ] in just

k: [k] in kill, mute in know

l: [l] in lace, mute in salmon

m: [m] in am, mute in mnemonics

n: [n] in can, [] in finger, mute in hymn

p: [p] in pity, mute in cupboard

ph: [f] in philosophy, [p] in shepherd, [ph] in haphazard, mute in phthisical

qu: [k] in quay, [kw] in queen, mute in lacquer

r: [r] in ray, mute in myrrh

s: [s] in see, [z] in as, [S] in sugar, [Z] in vision, mute in isle

sh: [S] in shine, [sh] in mishap

t: [t] in toe, [S] in motion, mute in soften

th: [t] in thyme, [] in thigh, [] in the, [t] in eighth

v: [v] in veal

x: [z] in xylophone, [ks] in vex, [gz] in exalt, [k] in except

y: [j] in yard, mute in prayer

z: [ts] in pizza, [z] in zeal, [Z] in azure, mute in rendezvous 

Sweet developed serveral systems of sound spelling.  The different versions of broad romic where quite similar.  E.G.,   /ou/ became oa and /o:/ or / / became ao.

For an alternate broad romic, see Dr. Kelly's Romajii.