Words formed from any letters in mailbox plus optional blank

s -

sim₆

six₁₀

sob₆

sol₄

som₆

sox₁₀

xis₁₀

t -

tab₆

tam₆

tao₃

tax₁₀

til₄

tom₆

v -

via₇

vim₁₀

vox₁₄

w -

wab₉

wax₁₃

y -

yam₈

yob₈

yom₈

z -

zax₁₉

zoa₁₂