Solutions :

3-letter words (1 point): 46

AIA; AIL; AIN; AIS; ARE; AUE; AVE; EAR; EAU; EEL; ELS; ERA; EVE; INS; IOS; ISO; LEA; LEE; LEI; LEU; LEV; LIE; LIN; LIS; NIE; NIL; NIS; OAR; OES; OIL; OOS; OSE; RAI; REE; REO; REV; SEA; SEE; SEI; SIN; ULE; VAE; VAR; VEE; VIA; VIE.

4-letter words (1 point): 46

AILS; AINS; AVEL; AVER; EAVE; EELS; ELSE; EVER; ILEA; ISLE; LEAR; LEES; LEIS; LEVA; LEVE; LIAR; LIES; LIEU; LINS; NIES; NILS; OILS; OOSE; RAIA; RAIL; RAIN; RAIS; RAVE; REES; SEAR; SEEL; SEER; SEIL; SILE; SLEE; SLUE; SOIL; VAES; VAIL; VAIN; VARE; VEES; VEIL; VEIN; VERA; VIAE.

5-letter words (2 points): 26

AISLE; AIVER; AVELS; ELSIN; EOSIN; ESILE; LEARE; LEAVE; LEEAR; LEVEE; LEVER; LIEVE; NIEVE; RAILE; RAILS; RAINS; RAISE; RAVEL; REAVE; REVEL; REVIE; SEARE; SIEVE; VAILS; VEILS; VEINS.

6-letter words (3 points): 7

LEAVER; LEVEES; LIEVER; RAVELS; REVELS; SLEAVE; SLIEVE.

7-letter word (7 points): 1

RAVELIN.

8-letter word (11 points): 1

RAVELINS.