Solutions :

3-letter words (1 point): 34

EEN; ENG; ENS; ERE; ERG; ERN; ERS; ESS; EST; EVE; GEE; GEN; IRE; LIE; LIT; NEE; NEG; REE; REG; REI; REN; RES; REV; RIT; SEE; SEG; SEI; SEN; SER; SRI; TIE; TIL; VEE; VEG.

4-letter words (1 point): 55

EEVN; ENGS; ERES; EREV; ERGS; ERNS; ERST; ESTS; EVEN; EVER; EVES; GEIT; GENS; GERE; GERT; GEST; GREE; GREN; GRIT; IRES; LIEN; LIER; LIES; LIRE; NEGS; NESS; NEST; NEVE; REEN; REES; REGS; RENS; REST; SEER; SEGS; SEIL; SEIR; SENS; SERE; SLIT; SNEE; TIER; TIES; TILS; TIRE; TIRL; TREE; TRES; TRIE; VEER; VEES; VEIL; VERS; VERT; VEST.

5-letter words (2 points): 35

EEVNS; EVENS; EVERT; GESTS; GREEN; GREES; GRENS; GREVE; LIENS; LIERS; LIEVE; LITRE; NESTS; NEVER; REENS; REEST; RESTS; RIEVE; SEVER; SLIER; SNEER; TIERS; TIRES; TIRLS; TREEN; TREES; TRESS; TREST; TRIES; VEERS; VEILS; VERGE; VERSE; VERST; VESTS.

6-letter words (3 points): 16

GREENS; GREVES; GRIEVE; GRILSE; LIEVER; LITRES; REESTS; REVEST; RIEVES; SLIEVE; SNEERS; TREENS; TRESTS; TRIENS; VERGES; VERSTS.

7-letter words (7 points): 4

GRIEVES; LIEVEST; REVESTS; VERIEST.