8 letter words:
twibills13,
7 letter words:
twibill12,
twibils12,
6 letter words:
twibil11,
twills9,
5 letter words:
swill8,
twill8,
wills8,
wilts8,
bills7,
lilts5,
still5,
tills5,
4 letter words:
iwis7,
will7,
wilt7,
wist7,
wits7,
bill6,
bits6,
ibis6,
libs6,
ills4,
lilt4,
list4,
lits4,
sill4,
silt4,
slit4,
till4,
tils4,
3 letter words:
wis6,
wit6,
bis5,
bit5,
lib5,
sib5,
ill3,
its3,
lis3,
lit3,
sit3,
til3,
tis3,
2 letter words:
bi4,
is2,
it2,
li2,
si2,
ti2,
