English verb conjugation
CAN UNDERSELL

Irregular verb: undersell - undersold - undersold

Affirmation

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

Negation

Simple form	V-ing form
I cannot undersell you cannot undersell he cannot undersell we cannot undersell you cannot undersell they cannot undersell	I cannot be underselling you cannot be underselling he cannot be underselling we cannot be underselling you cannot be underselling they cannot be underselling
Perfect	V-ing perfect
I cannot have undersold you cannot have undersold he cannot have undersold we cannot have undersold you cannot have undersold they cannot have undersold	I cannot have been underselling you cannot have been underselling he cannot have been underselling we cannot have been underselling you cannot have been underselling they cannot have been underselling

Interrogative form

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

Interro-negative form

Simple form	V-ing form
can I not undersell? can you not undersell? can he not undersell? can we not undersell? can you not undersell? can they not undersell?	can I not be underselling? can you not be underselling? can he not be underselling? can we not be underselling? can you not be underselling? can they not be underselling?
Perfect	V-ing perfect
can I not have undersold? can you not have undersold? can he not have undersold? can we not have undersold? can you not have undersold? can they not have undersold?	can I not have been underselling? can you not have been underselling? can he not have been underselling? can we not have been underselling? can you not have been underselling? can they not have been underselling?