Solutions :

3-letter words (1 point): 37

EEL; EEN; ELT; ENE; ENS; ILL; INS; JET; LEE; LES; LET; LIE; LIN; LIS; MEN; MES; MET; MIL; MIS; NEE; NET; NIE; NIL; NIM; NIS; SEE; SEI; SEL; SEN; SET; SIM; SIN; TEE; TEL; TEN; TES; TET.

4-letter words (1 point): 53

EINE; ENES; ESNE; ETEN; ILLS; JETE; LEES; LENS; LENT; LIEN; LIES; LIME; LIMN; LINE; LINS; LINT; MEIN; MENE; MENT; MESE; METE; MIEN; MILL; MILS; MINE; MINT; MISE; NEMN; NENE; NETE; NIES; NILL; NILS; NINE; NISI; SEEL; SEEN; SEIL; SEMI; SENE; SENT; SIEN; SILL; SINE; SLIM; SNEE; TEEN; TEES; TEIL; TENE; TENS; TENT; TETE.

5-letter words (2 points): 42

EISEL; ETENS; INLET; INSET; INTEL; JETES; LEESE; LENES; LENIS; LENSE; LIENS; LIMEN; LIMES; LINEN; LINES; MEINS; MEINT; MENES; MENSE; MESEL; MESNE; METES; MIENS; MILLS; MINES; NEESE; NENES; NETES; NILLS; NINES; NISEI; SEINE; SENTE; SIENT; SLIME; TEENE; TEENS; TEILS; TENES; TENET; TENSE; TETES.

6-letter words (3 points): 12

INTENT; LENTEN; LILIES; LIMENS; LINENS; LINTEL; MENTEE; MILLIE; MISLIE; NEINEI; TEENES; TELNET.

7-letter words (7 points): 6

INTENSE; LENIENT; LISENTE; MENTEES; MILLIES; NEINEIS.