Solutions :

3-letter words (1 point): 49

AAS; AFT; AMA; AMU; ATE; EAS; EAT; EMS; EMU; EST; ETA; FAA; FAE; FAT; FOE; FUM; MAA; MAE; MAS; MAT; MET; MUS; MUT; OAF; OAT; OFT; SAE; SAM; SET; SMA; SUE; SUM; SUS; TAE; TAM; TAO; TAT; TEA; TES; TOE; TOT; TUM; TUT; UFO; USE; UTA; UTE; UTS; UTU.

4-letter words (1 point): 61

AMAS; AMUS; ATES; ATMA; EAST; EATS; EMUS; ESTS; ETAT; FAAS; FAME; FATE; FATS; FOAM; FUSE; FUST; MAAS; MASA; MAST; MASU; MATE; MATS; MEAT; META; MUSE; MUST; MUTE; MUTS; OAFS; OATS; SAMA; SAME; SETA; SETS; SMUT; STAT; STUM; SUES; SUET; SUMS; SUSU; TAME; TAMS; TATE; TATS; TATU; TEAM; TEAS; TEAT; TEMS; TOEA; TOFT; TOFU; TOTE; TUFA; TUFT; TUMS; TUTS; TUTU; UTES; UTUS.

5-letter words (2 points): 31

AMATE; AMUSE; ATMAS; EASTS; ETATS; FATES; FOAMS; FUSTS; MASTS; MASUS; MATES; MEATS; MUSET; MUSTS; MUTES; SAMFU; SETAE; SMUTS; STATE; STUMS; SUETS; TATES; TATUS; TEAMS; TEATS; TOEAS; TOFTS; TOFUS; TOTEM; TUFTS; TUTUS.

6-letter words (3 points): 11

AMATES; ESTATE; FUSUMA; MEATUS; METATE; MUSETS; MUSEUM; MUTATE; SAMFUS; STATUS; TOTEMS.

7-letter words (7 points): 3

METATES; MUSEUMS; MUTATES.