Words formed from any letters in knockoffs plus optional blank

t -

toff₁₀

tons₅

took₈

toon₅

u -

sunk₁₀

unco₉

w -

woks₁₁

wonk₁₂

wons₈

woof₁₀

woos₇

y -

sync₁₀

yock₁₃

yoks₁₀

z -

zonk₁₈

zoon₁₄

zoos₁₃