7 letter words:
furling11,
6 letter words:
ingulf10,
luring7,
ruling7,
5 letter words:
fling9,
flung9,
fungi9,
lungi6,
lurgi6,
ruing6,
unrig6,
4 letter words:
frig8,
frug8,
fung8,
gulf8,
firn7,
flir7,
furl7,
girl5,
girn5,
grin5,
gurl5,
gurn5,
iglu5,
ling5,
lung5,
ring5,
rung5,
nirl4,
nurl4,
ruin4,
3 letter words:
fig7,
fug7,
gif7,
fil6,
fin6,
fir6,
flu6,
fun6,
fur6,
rif6,
gin4,
gnu4,
gul4,
gun4,
gur4,
lig4,
lug4,
rig4,
rug4,
lin3,
lur3,
nil3,
nur3,
rin3,
run3,
uni3,
urn3,
2 letter words:
if5,
gi3,
gu3,
ug3,
in2,
li2,
nu2,
un2,
ur2,