Solutions :

3-letter words (1 point): 47

AAL; AAS; ADO; ADS; AIA; AIL; AIM; AIN; AIS; AND; ASS; DAN; DAS; DON; FIL; FIN; FUM; FUN; IFS; ION; LAY; LIN; LIS; MIL; MIS; MUN; MUS; NAS; NIL; NIM; NIS; NOD; NUS; ODA; ODS; OIL; SAD; SAI; SAN; SIF; SIM; SIN; SIS; SUI; SUM; SUN; UNI.

4-letter words (1 point): 37

AIAS; ALIF; ANDS; ANOA; DAIS; DONA; FILA; FILM; FUSS; ILIA; LIAS; LIMN; LION; MISS; MUIL; MUNI; MUSS; NADS; NAIF; NAIL; NAIN; NAOI; NISI; NODS; NOIL; ODAS; OILY; SADO; SADS; SAIL; SAIM; SAIN; SAIS; SAND; SIAL; SIMI; UNIS.

5-letter words (2 points): 22

AALII; ADSUM; ALIAS; ALIFS; DAILY; DOILY; DONAS; FILMI; FUSIL; ILIAD; ILIUM; LINUM; MILIA; MINUS; MISDO; MISSA; MUNIS; NAIFS; NOILY; OASIS; SANDS; SASIN.

6-letter words (3 points): 11

AALIIS; DAIMIO; FILMIS; FUSAIN; FUSION; ILIADS; NASIAL; SAIMIN; SIMIAL; SIMIAN; SIMLIN.

7-letter words (7 points): 2

FISSION; NOISILY.