6 letter wod: R C E I S K

3 letter words:
Ice
Ire
Irk
Rec
Sec
Sic
Sir
Sir
Ski

4 letter words
Ices
Irks
Rice
Rick - a stack of cordwood or logs cut to even lengths
Rise
Risk
Sick
Sire

5 letter words
Cries
Rices
Ricks - hayricks, cordwoods
Skier

6 letter word
Sicker