Solutions :

3-letter words (1 point): 43

AIA; AIL; AIS; ALA; ALL; ALS; ALT; ART; AUK; BOK; BOO; BOX; BUT; ILL; KAI; KAT; KOB; LAR; LAS; LAT; LAX; LIS; OBI; OKA; OUK; OUT; RAI; RAT; RAX; SAI; SAL; SAX; SIX; TAI; TAK; TAR; TAU; TAX; TUB; TUI; TUX; UTA; XIS.

4-letter words (1 point): 47

AIAS; AILS; ALAR; ALAS; ALLS; AXAL; AXIL; AXIS; BIAS; BOKO; BOOK; BOUK; BOUT; BUAT; ILLS; IXIA; KAIL; KAIS; KALI; KART; KUIA; KUTA; LATU; LIAR; LIAS; LILT; OBIA; OKTA; RAIA; RAIL; RAIS; RAKU; RATU; SAIL; SALL; SIAL; SILL; SILT; SLAT; TAIL; TAIS; TALA; TALI; TALL; TAXA; TAXI; TUIS.

5-letter words (2 points): 22

ALIAS; ALLIS; AXIAL; AXILS; BIALI; BUILT; IXIAS; KAILS; KALIS; KUIAS; LIART; OBIAS; RAIAS; RAILS; SALAL; SALIX; SLART; TAILS; TALAS; TALLS; TAXIS; TRAIL.

6-letter words (3 points): 6

AXILLA; BIALIS; BIAXAL; OXALIS; TALLIS; TRAILS.

7-letter words (7 points): 3

AXILLAR; AXILLAS; BIAXIAL.