Solutions :

3-letter words (1 point): 62

ADO; AVE; BED; BEE; BOA; BOD; BOO; BUD; BUR; DAE; DAH; DEB; DEE; DEV; DOB; DOH; DOO; DOT; DUB; DUE; DUO; EAT; ERE; HAD; HAE; HAO; HAT; HEM; HOA; HOD; HOO; HOT; MED; MEE; MEU; OAT; ODA; ODE; OOH; OOT; OUD; OUR; REB; RED; REE; RUB; RUD; RUE; TAD; TAE; TAO; TAV; THE; THO; TOD; TOO; UDO; URD; URE; VAE; VAT; VEE.

4-letter words (1 point): 65

AHED; AHEM; BEAD; BEAT; BEDE; BEDU; BEER; BERE; BOAT; BODE; BOOH; BOOT; BUDA; BUDO; BURD; DATO; DEBE; DEEM; DEER; DEEV; DERE; DEVA; DOAT; DOOB; DOTH; DOUR; DREE; DRUB; DURE; EATH; EAVE; ERED; HADE; HAED; HAEM; HAVE; HEAD; HEAT; HEBE; HEED; HOOD; MEAD; MEAT; MEED; MEER; OATH; ODAH; ODEA; OHED; READ; REDE; REDO; REED; RUBE; RUDE; RUED; TAED; THAE; THEE; THEM; TOAD; URDE; UREA; VADE; VEER.

5-letter words (2 points): 24

ADEEM; BEATH; BOOTH; BOURD; DEATH; DEAVE; DEERE; EATHE; EAVED; EMBED; EMBER; EVADE; HEDER; HOAED; MEATH; ODOUR; OOHED; REAVE; REDUB; REEDE; THEBE; THEED; URDEE; UREDO.

6-letter words (3 points): 6

BEADER; BOOHED; EVADER; HEADER; OBDURE; REAVED.

7-letter word (7 points): 1

BEATHED.