Solutions :

3-letter words (1 point): 65

ADD; ADS; AID; ASS; BID; BIG; BIO; BOA; BOH; BOI; BOS; DAD; DAE; DAS; DIB; DID; DIE; DIG; EAS; EAU; ESS; GIB; GID; GIE; GIO; HID; HIE; HOA; HOB; HOE; HOI; HOM; HOS; HUE; HUM; IDS; IOS; MHO; MOA; MOB; MOE; MOI; MOS; MOU; MUS; OBI; OES; OHM; OSE; OUS; SAD; SAE; SAI; SAU; SEA; SEI; SOB; SOH; SOM; SOU; SUD; SUE; SUM; UDS; USE.

4-letter words (1 point): 51

ADDS; AIDS; BIAS; BIDS; BIOS; BOAS; BOSS; DADS; DAES; DAUD; DIES; DUAD; EAUS; EUOI; GIDS; GIES; GIOS; HIES; HOAS; HOES; HOSE; HOSS; HUES; HUSO; HUSS; MHOS; MOAI; MOAS; MOES; MOSE; MOSS; MOUE; MOUS; MUSE; MUSO; MUSS; OBIA; OHIA; OSES; OSSA; SADI; SADS; SAID; SASS; SEAS; SESS; SOUM; SUDD; SUES; SUMO; USES.

5-letter words (2 points): 21

ADDIO; ADIEU; ADIOS; ASSES; AUDIO; BOUSE; DAUDS; HOSES; HOUSE; MOBIE; MOSES; MOUES; MOUSE; MUSES; MUSSE; OASES; OBIAS; OHIAS; SAIDS; SASSE; SESSA.

6-letter words (3 points): 17

ADDIES; ADDIOS; ADIEUS; ASSESS; AUDIOS; BIASES; BOSSES; BOUSES; HOSSES; HOUSES; HUSSES; MOBIES; MOSSES; MOUSES; MOUSSE; MUSSES; SASSES.

7-letter words (7 points): 2

BIASSES; MOUSSES.