Solutions :

3-letter words (1 point): 46

ACE; ACT; ARB; ARE; BAC; BAN; BAR; BAT; BEL; BEZ; BRA; CAB; CAN; CAR; CAT; CEL; CIT; ERA; ERN; ICE; INN; IRE; ITA; LEU; LEW; LEZ; LUZ; NAB; NAT; NIT; RAN; RAT; REB; REC; REW; REZ; RIN; RIT; TAB; TAN; TAR; TIC; TIN; ULE; WEB; ZEL.

4-letter words (1 point): 34

ABRI; ACER; ACRE; AREW; BARE; BARN; BRAN; BRAT; BRER; BREW; BRIN; BRIT; CARB; CARE; CARN; CIRE; CIRL; CREW; CRIT; ERIC; ICER; NABE; NARE; NICE; NIRL; RACE; RICE; TACE; TARE; TARN; TICE; TIRE; TIRL; WRIT.

5-letter words (2 points): 21

ABRIN; ACERB; ACTIN; BARER; BRACE; BRACT; CABER; CABRE; CARER; ERICA; NACRE; NICER; RACER; REBAR; RECIT; RECTA; RECTI; RERAN; RICER; TABER; ZEBRA.

6-letter words (3 points): 5

BRACER; CABRIT; LECTIN; LUZERN; TANREC.

7-letter word (7 points): 1

CERATIN.