Words formed from any letters in postbox plus optional blank

r -

trop₇

t -

tost₄

tots₄

u -

tubs₈

tups₈

w -

tows₇

twos₇

woos₇

wops₁₀

wost₇

wots₇

y -

toyo₆

toys₆

typo₉

xyst₁₃

yobs₉

z -

zoos₁₃