9 letter words:
rucksacks21,
8 letter words:
rucksack20,
6 letter words:
cracks14,
crucks14,
scaurs8,
5 letter words:
crack13,
cruck13,
carks11,
casks11,
cusks11,
racks11,
rucks11,
sacks11,
sucks11,
rakus9,
rusks9,
sarks9,
skuas9,
arcus7,
ascus7,
casus7,
crass7,
scars7,
scaur7,
suras5,
4 letter words:
cark10,
cask10,
cusk10,
rack10,
ruck10,
sack10,
suck10,
arks8,
asks8,
auks8,
raku8,
rusk8,
sark8,
skas8,
skua8,
suks8,
arcs6,
cars6,
crus6,
curs6,
cuss6,
sacs6,
scar6,
sura4,
ursa4,
3 letter words:
ark7,
ask7,
auk7,
kas7,
ska7,
suk7,
arc5,
car5,
cru5,
cur5,
sac5,
ars3,
ass3,
ras3,
sau3,
2 letter words:
ka6,
ar2,
as2,
us2,
