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 can't undersell you can't undersell he can't undersell we can't undersell you can't undersell they can't undersell	I can't be underselling you can't be underselling he can't be underselling we can't be underselling you can't be underselling they can't be underselling
Perfect	V-ing perfect
I can't have undersold you can't have undersold he can't have undersold we can't have undersold you can't have undersold they can't have undersold	I can't have been underselling you can't have been underselling he can't have been underselling we can't have been underselling you can't have been underselling they can't 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't I undersell? can't you undersell? can't he undersell? can't we undersell? can't you undersell? can't they undersell?	can't I be underselling? can't you be underselling? can't he be underselling? can't we be underselling? can't you be underselling? can't they be underselling?
Perfect	V-ing perfect
can't I have undersold? can't you have undersold? can't he have undersold? can't we have undersold? can't you have undersold? can't they have undersold?	can't I have been underselling? can't you have been underselling? can't he have been underselling? can't we have been underselling? can't you have been underselling? can't they have been underselling?