Solutions :

3-letter words (1 point): 63

AHI; AIL; AIT; ANE; ANT; ATE; DEL; DEN; DOE; DON; DOP; DOT; ELL; ELT; EON; ETA; ETH; GHI; HAN; HAO; HAT; HEN; HEP; HET; HIT; ILL; ITA; LED; LEP; LET; LIG; LIT; NAH; NAT; NED; NEP; NET; NOD; NOT; NTH; OAT; ODE; ONE; ONO; OPE; PED; PEH; PEN; PET; POD; POT; TAI; TAN; TAO; TED; TEL; TEN; THE; TIL; TOD; TOE; TON; TOP.

4-letter words (1 point): 65

AHED; ANTE; ANTI; ATOP; DELI; DELL; DELT; DENT; DOEN; DONA; DONE; DOPE; DOTE; DOTH; ELHI; ETNA; GHAT; GILL; GILT; GLED; GLEN; GLIA; GLIT; HAIL; HANT; HATE; HELL; HELP; HENT; HILI; HILL; ILIA; LENO; LENT; LITE; LITH; NAIL; NOAH; NODE; NOEL; NOPE; NOTA; NOTE; OATH; ONTO; OPED; OPEN; PELL; PELT; PENT; PEON; PLED; POET; PONE; PONT; POTE; TAIL; TANE; TELL; THAN; THEN; TILL; TOED; TONE; TOPE.

5-letter words (2 points): 31

AHENT; ANODE; ANTED; ATONE; DELTA; DEPOT; DOETH; DONAH; ENTIA; GILET; GLENT; HATED; HIANT; ILLTH; LENTI; LENTO; LIANE; LIGHT; LITED; LITHE; NETOP; NOTED; OATEN; PELTA; PLENA; PLEON; POTED; THANE; THILL; TONED; TOPED.

6-letter words (3 points): 16

ATONED; DENTIL; DETAIL; DONATE; ENTAIL; HANTED; HANTLE; HILLED; ILLITE; LENTIL; LITHED; PLIGHT; PONTIL; TAILLE; TENAIL; TILLED.

7-letter words (7 points): 7

ANTHILL; DELIGHT; HILLTOP; LIGHTED; LIGHTEN; PENTHIA; TOENAIL.

8-letter word (11 points): 1

PLIGHTED.