5 letter words:
brigs8,
brits7,
girts6,
grist6,
grits6,
trigs6,
4 letter words:
bigs7,
brig7,
gibs7,
bits6,
bris6,
brit6,
ribs6,
girt5,
gist5,
gits5,
grit5,
rigs5,
trig5,
stir4,
3 letter words:
big6,
gib6,
bis5,
bit5,
rib5,
sib5,
git4,
rig4,
its3,
sir3,
sit3,
sri3,
tis3,
2 letter words:
bi4,
is2,
it2,
si2,
ti2,