Words formed from any letters in undigestible plus optional blank

y -

yeti₆

yids₇

yins₇

yule₈

z -

zebu₁₇

zeds₁₄

zees₁₃

zein₁₄

zest₁₃

zigs₁₅

zing₁₆

zins₁₄

ziti₁₃

zits₁₃