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