Solutions :

3-letter words (1 point): 58

ADD; AID; AIM; AIR; AMI; AMU; ANE; ANI; ARE; AUE; DAE; DAM; DAN; DEI; DEY; DIM; DUE; DUI; DUN; EAN; EAR; EAU; EMU; ERA; ERN; IRE; JIN; JUD; JUN; MAD; MAE; MAN; MAR; MED; MEU; MID; MIR; MNA; MUD; MUN; NAE; NAM; NIE; RAD; RAI; RAM; RAN; REI; REN; RIA; RID; RIM; UEY; UNI; URE; URN; YIN; YUM.

4-letter words (1 point): 56

AIRN; AMID; AMIR; ARID; AUNE; DAME; DAMN; DARE; DARI; DARN; DAUD; DAUR; DIME; DIRE; DUAD; DUAN; DUAR; DUMA; DUNE; EARN; EINA; EINE; EMIR; IURE; JEAN; MAID; MAIR; MANE; MANI; MARE; MAUD; MAUN; MEIN; MIRE; MUNI; NAME; NAMU; NARE; NEAR; NIED; NUDE; RAID; RAMI; RANI; RAUN; READ; REAM; REAN; REIN; RIMA; RIME; RIMU; UNAI; UNAU; UREA; YUAN.

5-letter words (2 points): 20

AIMED; AUREI; DEMAN; DIRAM; DUNAM; JERID; JUMAR; MAIRE; MARID; MAURI; NADIR; NAIRU; NAMED; READD; REAME; RIMAE; RIMED; UNRID; URAEI; URENA.

6-letter words (3 points): 9

ADMIRE; DAMNER; DAUNER; INJERA; MEINIE; REAMED; RENAME; RENIED; UNREAD.

7-letter words (7 points): 4

RENAMED; UNAIMED; UNRIMED; URANIUM.