Solutions :

3-letter words (1 point): 63

ARB; ARS; BAG; BAM; BAP; BAR; BAT; BRA; BRR; BRU; GAB; GAM; GAP; GAR; GAT; GAU; GUR; GUT; LIP; LIS; LOR; LOS; LOU; MAG; MAP; MAR; MAT; ORA; ORS; OUR; OUT; PAM; PAR; PAT; PIR; PIS; PSI; RAG; RAM; RAP; RAT; RIP; RUG; RUT; SIP; SIR; SOL; SOU; SPA; SRI; TAB; TAG; TAM; TAP; TAR; TAU; TUG; URB; URP; UTA; UTU; ZOL; ZOS.

4-letter words (1 point): 67

ABRI; ARIL; ARIS; BAPS; BARP; BARS; BAUR; BRAG; BRAT; BRIS; BRUT; GAMB; GAPS; GARB; GARI; GARS; GAUR; GUAR; GURL; GURS; LIPA; LIPS; LIRA; LISP; LOUR; LOUT; MAPS; MARL; MARS; MAUT; ORRA; OURS; PARR; PARS; PATU; PIRL; PIRS; PRAM; PRAT; PRAU; RAPS; RATU; RIPS; RISP; ROUT; RUGA; RURP; SILO; SIRS; SLIP; SOLI; SORA; SORI; SOUR; SOUT; SPAG; SPAM; SPAR; SPAT; SRIS; TAPS; TARO; TARP; TARS; URPS; ZOLS; ZORI.

5-letter words (2 points): 42

ABRIS; ARILS; ARRIS; AURIS; BARPS; BARRO; BAURS; GARIS; GAURS; GUARS; GURLS; LORIS; LOURS; MARLS; MARRI; MATZO; MAURI; ORRIS; PARIS; PAROL; PARRS; PIRLS; PRUTA; RURPS; SILOS; SIRRA; SLIPS; SORRA; SOURS; SPARS; SPRAG; SPRAT; SPRUG; TAPIR; TAPIS; TAROS; TARPS; TARSI; TURPS; URARI; ZORIL; ZORIS.

6-letter words (3 points): 12

MARRIS; MATZOS; MAURIS; OURARI; PARLOR; PAROLS; SOUARI; SOUTAR; TAPIRS; TZURIS; URARIS; ZORILS.

7-letter words (7 points): 5

OURARIS; PARLORS; PARLOUR; SOUARIS; SOUTARS.

8-letter word (11 points): 1

PARLOURS.