Solutions :

3-letter words (1 point): 32

AHI; AIM; AIN; AIR; ANN; ARC; ARM; CIS; HAN; HIM; HIN; INS; ISM; LAH; LAR; LIS; MIC; MIL; MIR; MIS; MNA; NAH; NIM; RAH; RAI; RAN; RIA; RIM; RIN; SIC; SIM; SIR.

4-letter words (1 point): 36

AIMS; AINS; AIRN; ARCS; ARMS; CIRL; CRAN; CRIM; CRIS; HAIN; HAIR; HARL; HARM; HARN; HIMS; HINS; ISMS; LAIN; LAIR; LARI; LARN; LIMN; MICS; MIHA; MISS; NAIN; NARC; NIMS; NIRL; RAIN; RIAL; RIMS; RINS; SIMI; SIMS; SMIR.

5-letter words (2 points): 15

AIRNS; ARMIL; CRIMS; HAINS; HARIM; HARMS; HARNS; LARNS; LIMNS; MICRA; NARCS; RAINS; SCLIM; SCRAN; SCRIM.

6-letter words (3 points): 7

ARCMIN; HARIMS; HARMIN; SCLIMS; SCRIMS; SIMIAL; SIMIAN.

7-letter words (7 points): 3

ARCMINS; HARMINS; NARCISM.

8-letter word (11 points): 1

NARCISMS.