9 letter words:
bucketful20,
7 letter words:
tubeful12,
6 letter words:
bucket14,
buckle14,
tubful11,
tubule8,
5 letter words:
fleck14,
bucku13,
fluke12,
cleft10,
flute8,
bluet7,
butle7,
culet7,
4 letter words:
feck13,
fuck13,
beck12,
buck12,
buke10,
bulk10,
cuke10,
luck10,
tuck10,
clef9,
flub9,
club8,
cube8,
kelt8,
kutu8,
leku8,
luke8,
felt7,
flue7,
fuel7,
left7,
belt6,
blet6,
blue6,
bute6,
celt6,
clue6,
cult6,
cute6,
lube6,
luce6,
tube6,
lute4,
tule4,
3 letter words:
kef10,
keb9,
fub8,
cub7,
elk7,
euk7,
ket7,
kue7,
lek7,
uke7,
eft6,
elf6,
fet6,
feu6,
flu6,
tef6,
bel5,
bet5,
but5,
cel5,
cue5,
cut5,
ecu5,
tec5,
tub5,
elt3,
let3,
leu3,
tel3,
ule3,
ulu3,
ute3,
utu3,
2 letter words:
ef5,
fe5,
be4,
el2,
et2,
te2,
ut2,