tch
/ch/, 3-letter /ch/ used only after a single short vowel
ck
/k/, 2-letter /k/ used only after a single short vowel
dge
/j/, 3-letter /j/ used only after a single short vowel
kn
/n/, 2-letter /n/ used only at the beginning of a base word
gn
/n/, 2-letter /n/ used at the beginning or end of a base word
wr
/r/, 2-letter /r/ used only at the beginning of a base word
ti
/sh/, tall-letter /sh/ used at the beginning of any syllable after the first one
ci
/sh/, short-letter /sh/ used at the beginning of any syllable after the first one
si
/sh/, /zh/
eigh
/ay/, 4-letter /ay/
igh
/I/, 3-letter /I/
ough
/oh/, /oo/, /uff/, /off/, /aw/, /ow/
augh
/aff/, /aw/