Here the letter "y" DOESN'T change to "ie"
abbeys
alleys
annoys
baileys
bays
boys
brays
chimneys
chutneys
clays
conveys
crays
curtseys
days
donkeys
drays
employs
flays
frays
galleys
gays
greys
heydays
jays
jerseys
jockeys
joeys
joys
keys
kidneys
lampreys
lays
medleys
monkeys
pays
plays
ploys
prays
pulleys
purveys
rays
says
slays
spays
splays
sprays
stays
storeys
strays
surveys
sways
toys
trays
trolleys
turkeys
valleys
volleys
ways