12 letter words:
substituting15,
8 letter words:
bittings11,
subunits10,
sittings9,
suitings9,
tissuing9,
7 letter words:
bitting10,
busings10,
bussing10,
busting10,
butting10,
tubings10,
subunit9,
titbits9,
tubists9,
issuing8,
sitting8,
suiting8,
tutting8,
intuits7,
sunsuit7,
6 letter words:
biting9,
busing9,
tubing9,
binits8,
bututs8,
titbit8,
tubist8,
gittin7,
siting7,
stings7,
unguis7,
insist6,
intuit6,
stints6,
stunts6,
suints6,
tuttis6,
5 letter words:
bungs8,
binit7,
bints7,
bitts7,
bunts7,
busts7,
butts7,
butut7,
snibs7,
snubs7,
stubs7,
gists6,
gusts6,
signs6,
sings6,
snugs6,
sting6,
stung6,
suing6,
tings6,
tungs6,
using6,
intis5,
nisus5,
sinus5,
situs5,
snits5,
stint5,
stuns5,
stunt5,
suint5,
suits5,
tints5,
titis5,
tutti5,
tutus5,
units5,
4 letter words:
bigs7,
bugs7,
bung7,
gibs7,
bins6,
bint6,
bits6,
bitt6,
buns6,
bunt6,
buss6,
bust6,
buts6,
butt6,
ibis6,
nibs6,
nubs6,
sibs6,
snib6,
snub6,
stub6,
subs6,
tubs6,
gins5,
gist5,
gits5,
gnus5,
guns5,
gust5,
guts5,
sign5,
sing5,
snug5,
sung5,
ting5,
tugs5,
tung5,
inti4,
nisi4,
nits4,
nuts4,
sins4,
sits4,
snit4,
stun4,
suit4,
suns4,
tins4,
tint4,
titi4,
tits4,
tuis4,
tuns4,
tuts4,
tutu4,
unit4,
3 letter words:
big6,
bug6,
gib6,
bin5,
bis5,
bit5,
bun5,
bus5,
but5,
nib5,
nub5,
sib5,
sub5,
tub5,
gin4,
git4,
gnu4,
gun4,
gut4,
tug4,
ins3,
its3,
nit3,
nus3,
nut3,
sin3,
sis3,
sit3,
sun3,
tin3,
tis3,
tit3,
tui3,
tun3,
tut3,
uns3,
uts3,
2 letter words:
bi4,
in2,
is2,
it2,
nu2,
si2,
ti2,
un2,
us2,
ut2,