Words formed from any letters in umbilical plus optional blank

m -

umm₁₀

p -

ump₁₀

r -

urb₇

t -

tub₇

tui₄

uta₄

u -

ulu₆

v -

vac₁₀

vau₈

via₇

vim₁₀

w -

wab₉

y -

yam₈

yum₉