ace axe
aced axed
aces axes
acing axing
acis axis
alec alex
appendices appendixes
calces calxes
calyces calyxes
cenogenesis xenogenesis
ceres xeres
ceric xeric
cerographic xerographic
cerography xerography
cervices cervixes
cicatrices cicatrixes
coca coxa
crated xrated
cray xray
crays xrays
cruces cruxes
cyst xyst
cysts xysts
directrices directrixes
duces duxes
eccentric excentric
ecosphere exosphere
ecospheres exospheres
ecotoxic exotoxic
executrices executrixes
faced faxed
faces faxes
facing faxing
flic flix
helices helixes
heritrices heritrixes
hoc hox
hyraces hyraxes
interlocutrices interlocutrixes
lac lax
luce luxe
luces luxes
mac max
marc marx
matric matrix
matrices matrixes
mesothoraces mesothoraxes
miction mixtion
minces minxes
paces paxes
pic pix
prosecutrices prosecutrixes
prothoraces prothoraxes
raced raxed
races raxes
racing raxing
radices radixes
rec rex
sac sax
salic salix
scandic scandix
sec sex
sect sext
sectile sextile
sects sexts
sic six
sices sixes
soc sox
sufficed suffixed
suffices suffixes
sufficing suffixing
taces taxes
tectorial textorial
thoraces thoraxes