Solutions :

3-letter words (1 point): 45

DOE; DOL; DOS; DSO; DUE; DUO; EDS; ERK; ESS; GIS; IRE; IRK; ISO; KED; KIR; KIS; KOI; KOR; LIG; LIS; LOD; LOS; LOU; ODE; ODS; OIK; OKE; OLD; ORD; ORE; OSE; OUD; RED; REO; ROK; SEG; SEZ; SIK; SIR; SKI; SOD; SOL; SOU; UDO; UDS.

4-letter words (1 point): 55

DERO; DOEK; DOER; DOLS; DOSE; DOSS; DREK; DUOS; EGIS; ERKS; GILD; IRED; IRKS; JESS; JIRD; KEDS; KERO; KISS; KOIS; KORE; KRIS; LIGS; LISK; LODE; LODS; LOSE; LOSS; LOUD; OIKS; OLDS; ORDO; ORDS; OSES; OUDS; REDO; REDS; REOS; RISE; RISK; ROKE; ROKS; SEGS; SIKE; SILD; SILO; SIRE; SKEO; SKER; SKIO; SKIS; SLOE; SODS; SOLD; SOLI; UDOS.

5-letter words (2 points): 27

DOEKS; DOSES; DREKS; ESKER; GESSO; GILDS; GLISK; GLODE; GLOSS; IRKED; JIRDS; KIORE; LISKS; LOSES; LOUED; OLDER; ORDOS; REDOS; RISES; RISKS; ROKED; SIKER; SILDS; SIRED; SKEOS; SOLDE; SOLDS.

6-letter words (3 points): 7

GILDER; GLISKS; KRISES; LOUDER; RISKED; SILOED; SOLDER.

7-letter word (7 points): 1

GESSOED.