English verb conjugation
COULD UNDERSELL

Irregular verb: undersell - undersold - undersold

Affirmation

Simple form	V-ing form
I could undersell you could undersell she could undersell we could undersell you could undersell they could undersell	I could be underselling you could be underselling she could be underselling we could be underselling you could be underselling they could be underselling
Perfect	V-ing perfect
I could have undersold you could have undersold she could have undersold we could have undersold you could have undersold they could have undersold	I could have been underselling you could have been underselling she could have been underselling we could have been underselling you could have been underselling they could have been underselling

Negation

Simple form	V-ing form
I couldn't undersell you couldn't undersell she couldn't undersell we couldn't undersell you couldn't undersell they couldn't undersell	I couldn't be underselling you couldn't be underselling she couldn't be underselling we couldn't be underselling you couldn't be underselling they couldn't be underselling
Perfect	V-ing perfect
I couldn't have undersold you couldn't have undersold she couldn't have undersold we couldn't have undersold you couldn't have undersold they couldn't have undersold	I couldn't have been underselling you couldn't have been underselling she couldn't have been underselling we couldn't have been underselling you couldn't have been underselling they couldn't have been underselling

Interrogative form

Simple form	V-ing form
could I undersell? could you undersell? could she undersell? could we undersell? could you undersell? could they undersell?	could I be underselling? could you be underselling? could she be underselling? could we be underselling? could you be underselling? could they be underselling?
Perfect	V-ing perfect
could I have undersold? could you have undersold? could she have undersold? could we have undersold? could you have undersold? could they have undersold?	could I have been underselling? could you have been underselling? could she have been underselling? could we have been underselling? could you have been underselling? could they have been underselling?

Interro-negative form

Simple form	V-ing form
couldn't I undersell? couldn't you undersell? couldn't she undersell? couldn't we undersell? couldn't you undersell? couldn't they undersell?	couldn't I be underselling? couldn't you be underselling? couldn't she be underselling? couldn't we be underselling? couldn't you be underselling? couldn't they be underselling?
Perfect	V-ing perfect
couldn't I have undersold? couldn't you have undersold? couldn't she have undersold? couldn't we have undersold? couldn't you have undersold? couldn't they have undersold?	couldn't I have been underselling? couldn't you have been underselling? couldn't she have been underselling? couldn't we have been underselling? couldn't you have been underselling? couldn't they have been underselling?