7 letter words:
eirenic9,
6 letter words:
frieze18,
fencer11,
fierce11,
feirie9,
ferine9,
refine9,
irenic8,
5 letter words:
fence10,
ficin10,
finer8,
infer8,
icier7,
nicer7,
niece7,
ricin7,
4 letter words:
friz16,
zinc15,
zein13,
zine13,
fice9,
fere7,
fern7,
fine7,
fire7,
firn7,
free7,
neif7,
reef7,
reif7,
rife7,
cere6,
cine6,
cire6,
nice6,
rice6,
erne4,
rein4,
3 letter words:
fez15,
fiz15,
zee12,
zin12,
fee6,
fen6,
fer6,
fie6,
fin6,
fir6,
ref6,
rif6,
cee5,
ice5,
rec5,
ere3,
ern3,
ire3,
nee3,
ree3,
rei3,
rin3,
2 letter words:
ef5,
fe5,
if5,
en2,
er2,
in2,
ne2,
re2,