Solutions :

3-letter words (1 point): 53

ADO; ARC; ARD; ARE; ARM; COD; COR; CRU; CUE; CUR; DAE; DOC; DOE; DOR; EAR; ECO; ECU; ERA; ERE; ERG; GEM; GEN; GEO; ICE; IRE; MEG; NEG; NIE; NUR; OAR; ODA; ORA; ORC; ORD; ORE; OUR; RAD; REC; REG; REI; REM; REN; REO; RIN; ROC; ROD; ROE; RUC; RUE; RUN; UNI; URD; URE.

4-letter words (1 point): 67

AERO; ARCO; AREG; CERE; CERO; CINE; CIRE; CODA; CORD; CORE; CORM; COUR; CREM; CRUE; CURD; CURE; DARE; DARG; DOER; DORE; DORM; DOUC; DOUN; DOUR; EARD; ECOD; ECRU; EGER; EINE; ERIC; EURO; GEAR; GENU; GERE; GERM; GRAD; GREN; GRUE; ICER; IURE; MEAD; MEOU; MERC; MERE; NICE; NURD; ORAD; RARE; READ; REAR; REIN; RICE; RINE; ROAD; ROAR; RORE; ROUE; RUER; RUIN; RUNE; UNCE; UNCI; UNCO; URAO; UREA; URGE; URIC.

5-letter words (2 points): 44

ADORE; ARDOR; AREIC; CERGE; CORER; COURD; COURE; CRARE; CRORE; CRUOR; CRURA; CUNEI; CURER; CURIE; DARER; DOUCE; DOURA; ENURE; GEARE; GENIC; GENIE; GREIN; ICIER; INCUR; INERM; INURE; MEARE; MERGE; NEGRO; NICER; OCREA; ORCIN; OREAD; OUNCE; OURIE; RARER; RECUR; RERUN; RICER; RICIN; RUNIC; URARE; UREIC; URINE.

6-letter words (3 points): 23

ADORER; ARDOUR; CIERGE; COURIE; CURARE; DOUCER; DOURER; ECURIE; ENCORE; ORCEIN; ORCINE; OURIER; REARER; RECORD; RECURE; REGEAR; REURGE; RICIER; ROARER; ROUNCE; RUINER; UNCOER; UNCORD.

7-letter words (7 points): 6

CINEREA; COURIER; DOUCINE; DOURINE; RECOURE; REINCUR.