Solutions :

3-letter words (1 point): 46

CEE; CID; CIG; CIT; DIE; DIG; DIM; DIN; DIT; DOE; DON; DOT; EEN; EMS; ENE; EON; GID; GIE; GIN; GIO; GIT; ICE; ION; MEE; MEM; MEN; MIC; MID; MIG; MIM; NEE; NID; NIE; NIM; NIT; NOD; NOT; ONE; TIC; TID; TIE; TIG; TIN; TOD; TOE; TON.

4-letter words (1 point): 42

CINE; CION; CITO; DICE; DICT; DIME; DIMS; DINE; DINO; DOEN; DOIT; DONE; EINE; EMIC; EMIT; GIEN; IMID; MEIN; MEMS; MENE; MENO; MICE; MICS; MIEN; MIME; MINE; MINI; MINO; NEEM; NICE; NIMS; NODI; ODIC; ONIE; OTIC; SMEE; SMIT; TICE; TICS; TIME; TINE; TONE.

5-letter words (2 points): 15

DICTS; DIENE; DONEE; GIMME; IMIDO; IMINE; IMINO; IMMIT; MIMEO; MIMIC; MINIM; NEEMS; SCENE; SCION; TONIC.

6-letter words (3 points): 7

DITONE; GIMMIE; MEINIE; MIMICS; MINIMS; NOTICE; TONICS.

7-letter word (7 points): 1

TONEMIC.