Base word ends in ieFinal y of base word changes to i before suffix ‘es’ or ‘ed’
belie-belies-belied
die-dies-died (but dying)
fie
lie-lies-lied (but lying)
magpie
necktie
pie-pies
piebald
tie-ties-tied (but tying)
vie-vies-vied
ally-allies-allied
apply-applies-applied
comply-complies-complied
cry-cries-cried
defy-defies-defied
deny-denies-denied
dignify-dignifies-dignified
dry-dries-dried
fly-flies
fry-fries-fried
imply-implies-implied
occupy-occupies-occupied
pigsty-pigsties
ply-plies-plied
ply-plies-plied
pry-pries-pried
rely-relies-relied
reply-replies-replied
satisfy-satisfies-satisfied
shy-shies-shied
sky-skies
spy-spies spied
sty-sties
supply-supplies-supplied
try-tries-tried

amplify-amplifies-amplified
certify-certifies-certified
clarify-clarifies-clarified
classify-classifies-classified
codify-codifies-codified
crucify-crucifies-crucified
diversify-diversifies-diversified
electrify-electrifies-electrified
exemplify-exemplifies-exemplified
falsify-falsifies-falsified
fortify-fortifies-fortified
glorify-glorifies-glorified
gratify-gratifies-gratified
horrify-horrifies-horrified
indemnify-indemnfies-indemnified
intensify-intensifies-intensified
justify-justifies-justified
magnify-magnifies-magnified
modify-modifies-modified
mollify-mollifies-mollified
mortify-mortifies-mortified
mystify-mystifies-mystified
notify-notifies-notified
nullify-nullifies-nullified
pacify-pacifies-pacified
personify-personifies-personified
purify-purifies-purified
qualify-qualifies-qualified
quantify-quantifies-quantified
ratify-ratifies-ratified
rectify-rectifies-rectified
sanctify-sanctifies-sanctified
satisfy-satisfies-satisfied
simplify-simplifies-simplified
solidify-solidifies-solidified
specify-specifies-specified
terrify-terrifies-terrified
testify-testifies-testified
typify-typifies-typified
unify-unifies-unified
verify-verifies-verified
vilify-vilifies-vilified