Solutions :

3-letter words (1 point): 50

ANE; ANI; ANN; ASS; BEN; BIN; BIO; BIS; EAN; EAS; ENS; FAE; FAN; FAS; INN; INS; ION; IOS; ISO; LIB; LIE; LIN; LIS; MOA; MOI; MON; MOS; NAE; NAN; NAS; NEB; NIB; NIE; NIL; NIS; NOM; NON; NOS; OAF; OIL; OMS; ONE; ONS; SAE; SAN; SIB; SIN; SOM; SON; SOS.

4-letter words (1 point): 61

ANIL; ANIS; ANNO; ANNS; ANOA; ANON; ANSA; BEAN; BEIN; BENI; BENS; BIEN; BINE; BINS; BIOS; BLIN; EANS; EINA; FANE; FANO; FANS; IBIS; IONS; ISNA; ISOS; LIEN; LINE; LINN; LINO; LINS; LION; MOAN; MOAS; MOIL; MONA; MONS; MOSS; NANE; NANS; NAOI; NAOS; NINE; NOIL; NOMS; NONA; NONE; NONI; OAFS; ONIE; OSSA; SANE; SANS; SIEN; SINE; SINS; SNEB; SNIB; SOIL; SOMS; SONE; SONS.

5-letter words (2 points): 29

ANION; ANOAS; ANSAE; BEANO; BEANS; BENIS; BENNI; BISON; BLINI; BLINS; BLISS; FANON; FANOS; INANE; INION; ISNAE; LIENS; LINEN; LININ; LINOS; LIONS; MOANS; MONAS; MONIE; NONAS; NONIS; SANSA; SASIN; SONNE.

6-letter words (3 points): 22

ANILIN; ANIONS; ASSOIL; BEANOS; BENNIS; BISONS; BISSON; BLINIS; FANION; FANONS; INIONS; INSANE; LININS; LISSOM; MOSSIE; NASION; NONANE; NONFAN; SANNIE; SASINE; SIENNA; SONSIE.

7-letter words (7 points): 6

ANILINS; BENISON; FANIONS; INOSINE; NASIONS; NONFANS.

8-letter word (11 points): 1

BENISONS.