7 letter words:
prepuce13,
6 letter words:
cupper12,
5 letter words:
creep9,
crepe9,
upper9,
puree7,
rupee7,
4 letter words:
cepe8,
peep8,
perp8,
prep8,
puce8,
repp8,
cere6,
cure6,
ecru6,
peer6,
pere6,
pree6,
pure6,
3 letter words:
cep7,
cup7,
pec7,
pep7,
pup7,
cee5,
cru5,
cue5,
cur5,
ecu5,
pee5,
per5,
pur5,
rec5,
rep5,
urp5,
ere3,
ree3,
rue3,
2 letter words:
pe4,
up4,
er2,
re2,