Solutions :

3-letter words (1 point): 45

BED; BEL; BEN; BUD; DEB; DEI; DEL; DEN; DIE; DIG; DIN; DUB; DUE; EDH; ELD; END; ERE; ERN; GHI; GID; GIN; HEN; HID; HIN; IDE; IRE; LED; LEI; LEU; LID; LIE; LIN; LUD; NEB; NED; NID; NIE; NIL; REB; RED; REI; REN; RID; RIN; ULE.

4-letter words (1 point): 61

BEDE; BEDU; BEIN; BERE; BLED; BLIN; BLUE; DEBE; DEID; DEIL; DELE; DELI; DERE; DERN; DIEB; DIED; DIEL; DINE; DIRE; DIRL; DUED; DUEL; DULE; EIDE; EILD; EINE; ELHI; ERED; ERNE; HEBE; HELD; HELE; HIDE; HIND; IDLE; IRED; LEIR; LERE; LEUD; LIED; LIEN; LIER; LIEU; LIND; LINE; LIRE; LUBE; LUDE; NIDE; NIDI; NIED; NIGH; NIRL; REDE; REIN; REND; RIDE; RIEL; RILE; RIND; RINE.

5-letter words (2 points): 36

BEDEL; BELIE; BLIND; BLINI; BLUDE; BLUED; BLUER; DEBEL; DEBUD; DELED; DINER; EDILE; EIDER; ELDER; ELDIN; ELIDE; ELUDE; ENDED; ENDER; HEDER; HELED; HIDED; HIDER; IDLED; IDLER; INDIE; LEBEN; LINER; LUBED; NEBEL; NIDED; REBEL; REDUB; RELIE; RENIG; RILED.

6-letter words (3 points): 23

BEHIND; BELIED; BELIER; BERLIN; DELUDE; DERIDE; DIRLED; DUELED; ELIDED; ELUDED; ELUDER; HINDER; LIERNE; LINDEN; NEBULE; NEREID; NIGHED; NIRLED; RELIDE; RELINE; RENDED; RENIED; RINDED.

7-letter words (7 points): 5

BERLINE; BLINDED; BLINDER; DELUDER; REDLINE.

8-letter word (11 points): 1

BLUELINE.

9-letter word (11 points): 1

BLUELINER.