Solutions :

3-letter words (1 point): 51

AHI; AIN; AIR; ALE; ANI; ARB; ARC; ARE; AUE; BRA; BRR; CEL; EAN; EAR; EAU; ERA; ERE; ERN; ERR; HAE; HAN; HER; HIE; HIN; IRE; LAH; LAR; LEA; LEI; LEU; LIE; LOR; LUR; NAE; NAH; NIE; OIL; OLE; ORA; ORE; RAH; RAI; RAN; REC; REH; REI; RIA; RIN; RUE; ULE; URE.

4-letter words (1 point): 84

AERO; AIRN; ALEC; ANCE; AREA; ARIL; ARLE; AURA; BRAE; BRAN; BREI; BRER; BRIE; BRIN; CEIL; CERE; CERO; CLUE; CRAN; EALE; EARL; EARN; EINA; ELAN; EURO; HAIN; HAIR; HALE; HALO; HARE; HARL; HARN; HARO; HEAL; HEAR; HEIR; HELO; HERE; HERL; HERO; HIRE; ILEA; IURE; LAER; LAIN; LAIR; LARE; LARI; LARN; LEAL; LEAN; LEAR; LEIR; LERE; LIER; LIEU; LIRA; LIRE; LOIR; LORE; LURE; NARC; NARE; NIRL; OLEA; ORAL; ORLE; ORRA; RAIN; RALE; RANI; RARE; REAL; REAN; REAR; REIN; RIAL; RIEL; RILE; ROIL; ROLE; RUER; RULE; UREA.

5-letter words (2 points): 49

AERIE; AIRER; ALURE; ANCLE; AREAL; ARERE; ARIEL; AURAE; AURAL; AURAR; AUREI; BRAIN; BRERE; BRIAR; BRIER; CERIA; CLEAN; CLEAR; CRARE; CRIER; ELAIN; HALER; HANCE; HEARE; HELIO; HIRER; INCLE; LANCE; LAURA; LEARE; LEARN; LORAN; LOREL; LURER; NARRE; OILER; OLEIN; ORIEL; RANCE; REALO; RELIE; RERAN; RULER; ULCER; URAEI; URALI; URARE; URARI; UREAL.

6-letter words (3 points): 20

AERIAL; AERIER; BREARE; CEILER; CEREAL; CRINAL; ELANCE; HALERU; HEARER; HEARIE; IRREAL; LANCER; LAURAE; LAUREL; LEALER; LOREAL; RANCEL; REALER; REHIRE; RELIER.

7-letter words (7 points): 4

CERRIAL; EARLIER; LARNIER; LEARIER.