Solutions :

3-letter words (1 point): 48

AHI; AHS; AIS; ARD; ARS; ASH; ASP; DEE; DEI; DEN; EEN; END; ENE; HAJ; HAS; HIE; HIP; HIS; IDE; ISH; JAI; JAR; JEE; NED; NEE; NEP; PED; PEE; PEN; PES; PIA; PIE; PIS; PSI; RAH; RAI; RAJ; RAS; RID; SAI; SAR; SED; SEE; SEI; SEN; SHA; SIP; SRI.

4-letter words (1 point): 59

AHIS; AJEE; ARID; ARSE; DEED; DEEN; DEEP; DEES; DENE; DESI; EISH; ENES; HAJI; HARD; HASP; HIED; HIES; HIPS; IDEE; IDES; JARS; JASP; JEDI; JEED; JEEP; JEES; JIRD; NEED; NEEP; NENE; NEPS; NESH; PEED; PEEN; PEES; PEND; PIAS; PIED; PIES; PISE; PISH; RAHS; RAIS; RASE; RASH; RASP; RIDE; SARD; SARI; SEED; SEEN; SEEP; SEND; SENE; SHIP; SIEN; SIPE; SPED; SPIE.

5-letter words (2 points): 27

ARSED; ASPEN; DEEPS; DENES; DESHI; ENDED; HAJES; IDEES; JASPE; JEEPS; NEEPS; NEESE; NENES; PEDES; PEISE; PIEND; RAISE; RAJES; RASED; RIDES; SEPIA; SHARD; SHIED; SIPED; SPEED; SPEND; SPIED.

6-letter words (3 points): 14

DENNED; ESPIED; HARDEN; HASPED; NEEDED; NEESED; PEENED; PEISED; PENDED; RAISED; RASHIE; RASPED; SEEDED; SENDED.

7-letter words (7 points): 2

SHARDED; SPEEDED.

8-letter words (11 points): 2

DRAISENE; HARDENED.