Ey - as in "key" or "they"
key, they
Gh - as in "ghost" or "ghastly"
ghost, ghastly
Gu - as in "guitar"
guitar
Ie - as in "field"
field
Ir – girl
girl
Ia - as in "piano" or "violin"
piano, violin
Kn - as in "knight" or "knee"
knight, knee
Mb - as in "lamb"
lamb
Ng - as in "sing" or "song"
sing, song
Oa - as in "boat" or "oak"
boat, oak
Au - as in "author" or "haul" or "vault" or "cause"
author, haul, vault, cause
Aw - as in "draw"
draw