Solutions :

3-letter words (1 point): 51

ACE; AIL; AIN; AIR; AIT; ALE; ALT; ANE; ARS; CAN; CAR; CAZ; EAN; EAR; EAS; EEL; EEN; ELT; ENS; ICE; LAC; LAR; LAS; LEE; LEZ; LIN; LIT; NAE; NAS; NEE; NIL; NIT; RAI; RAN; RAS; RIA; RIN; RIT; SAC; SAE; SAI; SAL; SAN; SAR; SAZ; SRI; TIL; TIN; ZAS; ZEE; ZEL.

4-letter words (1 point): 71

ACAI; ACNE; AINE; AIRN; AIRS; ALEE; ALIT; ANCE; ARIL; ARLE; CAIN; CANE; CANS; CARL; CARN; CARS; CEAS; CENS; CLAN; CZAR; EALE; EANS; EARL; EARN; EARS; ELAN; IZAR; LACE; LAIN; LAIR; LANE; LARI; LARN; LARS; LAZE; LENT; LIAR; LIAS; LINE; LINT; LIRA; NAIL; NAIN; NAZE; NAZI; NEAL; NEAR; NIRL; RACA; RACE; RAIL; RAIN; RAIT; RALE; RAZE; RIAL; RIAS; RILE; RINE; SAIL; SAIN; SAIR; SALE; SALT; SANE; SARI; SNAR; TIAR; TILE; TINE; TIRL.

5-letter words (2 points): 41

ACARI; AECIA; AINEE; AIRNS; AIZLE; ALINE; ANCLE; CAIRN; CARLE; CARNS; CEAZE; CLANS; CLINE; CLINT; CZARS; EARNS; ELAIN; ELANS; ELINT; ENIAC; ENLIT; ENTIA; IZARS; LAIRS; LANCE; LARNS; LENTI; LIANE; LIARS; LIRAS; NEARS; RAILE; RAINE; RANCE; RAZEE; SAINE; SAINT; SARIN; SNAIL; SNARL; TIARS.

6-letter words (3 points): 11

CAIRNS; CARLIN; ECLAIR; ELANCE; ENLACE; INLACE; LARINE; NARINE; SALINE; SANCAI; ZARNEC.

7-letter words (7 points): 4

ACARINE; CARLINE; ECLAIRS; SALTINE.