After /s/After /z/After /sh/After /ch/After /ks/Change y to i first
asses  
bosses
buses
cusses
dosses
fusses
gases
hisses
kisses
lasses
losses
masses
messes
misses
mosses
pisses
tosses
yeses
buzzes  
fizzes
fuzzes
jazzes
razzes
ashes
bashes
cashes
dashes
dishes
fishes
gashes
gushes
hashes
hushes
lashes
leashes
lushes
marshes
mashes
moshes
mushes
pashes
rashes
rushes
sashes
wishes
arches  
batches
beaches
botches
breaches
catches
coaches
couches
ditches
etches
fetches
hatches
hitches
hutches
itches
larches
latches
leaches
leeches
marches
matches
mooches
notches
parches
patches
peaches
pitches
poaches
pooches
pouches
preaches
reaches
retches
riches
screeches
slouches
speeches
teaches
touches
vetches
watches
witches
boxes  
coxes
cruxes
duxes
exes
faxes
fixes
flexes
foxes
mixes
sexes
sixes
taxes
tuxes
waxes
baby-babies
body-bodies
bury-buries
busy-busies
city-cities
copy-copies
cosy-cosies (UK)
cozy-cozies (US)
cry-cries
deny-denies
duty-duties
envy-envies
fancy-fancies
fury-furies
holy-holies
jury-juries
lady-ladies
levy-levies
lily-lilies
navy-navies
pity-pities
pony-ponies
posy-posies
rely-relies
ruby-rubies
shy-shies
sky-skies
spy-spies
sty-sties
tidy-tidies
try-tries
vary-varies