6 letter words:
ibices10,
cosies8,
ibises8,
5 letter words:
bices9,
bises7,
coses7,
cosie7,
oboes7,
sices7,
issei5,
4 letter words:
bice8,
cobs8,
bios6,
bise6,
boos6,
boss6,
cess6,
coos6,
coss6,
ibis6,
ices6,
obes6,
obis6,
oboe6,
secs6,
sibs6,
sice6,
sics6,
sobs6,
oses4,
seis4,
3 letter words:
cob7,
bes5,
bio5,
bis5,
boo5,
bos5,
cis5,
coo5,
cos5,
ice5,
obe5,
obi5,
sec5,
sib5,
sic5,
sob5,
ess3,
oes3,
ose3,
sei3,
sis3,
sos3,
2 letter words:
be4,
bi4,
bo4,
es2,
is2,
oe2,
oi2,
os2,
si2,
so2,