Solutions :

3-letter words (1 point): 66

ABO; AGA; AGE; AGO; AGS; AIM; AIN; AIS; ANI; AXE; BAG; BEG; BOD; BOG; BOS; DOB; DOG; DOM; DOS; DSO; EAN; EGO; EHS; ESS; GAB; GAE; GAN; GIE; GIN; GIS; GOB; GOD; GOS; HES; HEX; ISH; ISM; MIG; MIS; MIX; MOB; MOD; MOG; MOS; NAE; NAG; NIE; NIM; NIS; NIX; OBA; OBE; ODS; OMS; SEE; SEI; SEX; SHE; SIM; SIN; SIX; SOB; SOD; SOG; SOM; XIS.

4-letter words (1 point): 57

ABOS; AGIN; AIGA; AIMS; ANIS; AXES; AXIS; BAGS; BEAN; BEGO; BEGS; BEIN; BODS; BOGS; BOSH; BOSS; DOGE; DOGS; DOMS; DOSH; DOSS; EGIS; EGOS; EINA; EISH; GAIN; GEAN; GIES; GISM; GODS; GOSH; GOSS; ISMS; MIGS; MINA; MINX; MISE; MISS; MOBE; MODS; MOGS; MOSH; MOSS; NAGA; NAGS; NIES; NIMB; NIMS; NISH; NIXE; SHES; SHMO; SIMS; SMOG; SOBA; SOGS; SOMS.

5-letter words (2 points): 20

AEGIS; AGAIN; AGISM; ANISE; BAGIE; BEGAN; BEGIN; BOGAN; BOGIE; DOGIE; GISMO; GISMS; GOSSE; MINAE; MISGO; MIXES; NIXES; OSSIA; SIMBA; SMOGS.

6-letter words (3 points): 15

AGEISM; AGISMS; BAGIES; BEANIE; BOGIES; BOSHES; DOGIES; DOSHES; GISMOS; IMBOSS; MINXES; MOSHES; MOSSIE; OBEISM; OSSEIN.

7-letter words (7 points): 3

AGEISMS; BEANIES; OBEISMS.