いもぺんでわありませんでした
芋片喰ではありませんでした
imopendewārimasendeshita

Noun
Desu Copula

The polite, past negative form of いもかたばみ

1. Did not eat potato slices.; Was not eating potato slices.

Past/Perfective
Negative
Polite
Formal Register
Usually Written in Kana