4 letter words:
frag8,
frig8,
frug8,
fair7,
faur7,
fiar7,
frau7,
gair5,
gari5,
gaur5,
guar5,
ragi5,
ruga5,
3 letter words:
fag7,
fig7,
fug7,
gif7,
arf6,
auf6,
far6,
fir6,
fra6,
fur6,
rif6,
gar4,
gau4,
gur4,
rag4,
rig4,
rug4,
air3,
rai3,
ria3,
2 letter words:
fa5,
if5,
ag3,
gi3,
gu3,
ug3,
ai2,
ar2,
ur2,