8 letter words:
fubsiest13,
7 letter words:
busiest9,
subsite9,
6 letter words:
befits11,
feists9,
besits8,
bestis8,
buists8,
busies8,
bustis8,
subset8,
suites6,
tissue6,
utises6,
5 letter words:
befit10,
feist8,
fests8,
fetus8,
fiest8,
fists8,
fuses8,
fusts8,
seifs8,
sifts8,
besit7,
besti7,
bests7,
bises7,
bites7,
buist7,
buses7,
busti7,
busts7,
butes7,
stubs7,
tubes7,
etuis5,
issue5,
sites5,
situs5,
sties5,
suets5,
suite5,
suits5,
4 letter words:
fibs9,
fubs9,
efts7,
feis7,
fess7,
fest7,
fets7,
feus7,
fist7,
fits7,
fuse7,
fuss7,
fust7,
seif7,
sift7,
tefs7,
best6,
bets6,
bise6,
bist6,
bite6,
bits6,
buss6,
bust6,
bute6,
buts6,
sibs6,
stub6,
subs6,
tube6,
tubs6,
ests4,
etui4,
seis4,
sets4,
sies4,
sist4,
site4,
sits4,
stie4,
sues4,
suet4,
suit4,
ties4,
tuis4,
uses4,
utes4,
utis4,
3 letter words:
fib8,
fub8,
efs6,
eft6,
fes6,
fet6,
feu6,
fie6,
fit6,
ifs6,
sif6,
tef6,
bes5,
bet5,
bis5,
bit5,
bus5,
but5,
sib5,
sub5,
tub5,
ess3,
est3,
its3,
sei3,
set3,
sis3,
sit3,
sue3,
sui3,
sus3,
tes3,
tie3,
tis3,
tui3,
use3,
ute3,
uts3,
2 letter words:
ef5,
fe5,
if5,
be4,
bi4,
es2,
et2,
is2,
it2,
si2,
st2,
te2,
ti2,
us2,
ut2,