Solutions :

3-letter words (1 point): 77

ABA; ABO; AIA; AIN; AIT; ANE; ANI; AUE; BAA; BAN; BIN; BIO; BIT; BOI; BON; BOO; BOS; BOT; EME; EMO; EMU; ENE; EON; EST; HEM; HEN; HOE; HOI; HOM; HON; HOO; ION; IOS; ITS; MEN; MEU; MNA; MOE; MOI; MON; MOO; MOU; MUN; NAB; NET; NIB; NIT; NOB; NOH; NOM; NOO; NOS; NOT; OBA; OBI; OES; ONE; ONO; OOH; OOM; OON; OOS; OOT; OSE; SEN; SET; SOB; SON; SOT; SOU; TEN; TES; TIN; TOE; TON; TOO; UNI.

4-letter words (1 point): 78

ABOS; AINE; AITS; AUNE; BAIT; BANE; BANI; BINE; BIOS; BITE; BITO; BITS; BOET; BONE; BOOH; BOOM; BOON; BOTS; BOUN; EMEU; ENES; EUOI; HEME; HOES; HOME; HONE; HOON; HOOT; MENE; MENO; MENU; MEOU; MOES; MOIT; MONO; MOOI; MOON; MOOS; MOOT; MOUE; MUNI; MUON; NEMN; NEST; NETS; NEUM; NITE; NITS; NOES; NOME; NOSE; NOTE; NOUN; OBIA; OBIT; OMEN; ONES; ONOS; OOSE; OOTS; SENE; SOBA; SONE; SOOM; SOON; SOUM; STEN; STOB; TENE; TINE; TOES; TONE; TOOM; TOON; TOSE; TOUN; UNAI; UNIT.

5-letter words (2 points): 37

ABOON; ANION; BAITS; BANIA; BIOME; BITES; BITOS; BITOU; BOETS; BOITE; BONES; HONES; HOOTS; MENES; MOITS; MONOS; MOOSE; MOOTS; NEUME; NITES; NITON; NOMEN; NOOIT; NOOSE; NOTES; NUMEN; OBITS; OOBIT; OSTIA; SETON; STENO; STONE; STOUN; TONES; UNION; UNITE; UNITS.

6-letter words (3 points): 9

BINMEN; BOITES; HONEST; MUNITE; OOBITS; OSTIUM; TINMEN; TONEME; UNITES.

7-letter words (7 points): 4

ANEMONE; MUNITES; NOUMENA; OUABAIN.

8-letter word (11 points): 1

ANEMONES.