Solutions :

3-letter words (1 point): 22

BEG; DIT; DOL; DOR; DOT; LOD; LOR; LOT; ODD; ORD; ORT; PEG; PEW; PUB; RID; RIT; ROD; ROT; TID; TOD; TOR; WEB.

4-letter words (1 point): 23

BLOT; DIOL; DOIT; DOLT; DORT; GRID; GRIT; IDOL; LOID; LOIR; LOTI; ODOR; OLPE; ORDO; PLOD; PLOT; PUBE; RIOT; ROTI; ROTL; TIRO; TROD; WEPT.

5-letter words (2 points): 6

DIRGE; DROID; DROIT; GRIOT; LODGE; RIDGE.

6-letter words (3 points): 2

PLODGE; PUEBLO.

7-letter word (7 points): 1

EUPLOID.