English verb conjugation
CAN PETITION

Regular verb: petition - petitioned - petitioned

Affirmation

Simple form	V-ing form
I can petition you can petition he can petition we can petition you can petition they can petition	I can be petitioning you can be petitioning he can be petitioning we can be petitioning you can be petitioning they can be petitioning
Perfect	V-ing perfect
I can have petitioned you can have petitioned he can have petitioned we can have petitioned you can have petitioned they can have petitioned	I can have been petitioning you can have been petitioning he can have been petitioning we can have been petitioning you can have been petitioning they can have been petitioning

Negation

Simple form	V-ing form
I can't petition you can't petition he can't petition we can't petition you can't petition they can't petition	I can't be petitioning you can't be petitioning he can't be petitioning we can't be petitioning you can't be petitioning they can't be petitioning
Perfect	V-ing perfect
I can't have petitioned you can't have petitioned he can't have petitioned we can't have petitioned you can't have petitioned they can't have petitioned	I can't have been petitioning you can't have been petitioning he can't have been petitioning we can't have been petitioning you can't have been petitioning they can't have been petitioning

Interrogative form

Simple form	V-ing form
can I petition? can you petition? can he petition? can we petition? can you petition? can they petition?	can I be petitioning? can you be petitioning? can he be petitioning? can we be petitioning? can you be petitioning? can they be petitioning?
Perfect	V-ing perfect
can I have petitioned? can you have petitioned? can he have petitioned? can we have petitioned? can you have petitioned? can they have petitioned?	can I have been petitioning? can you have been petitioning? can he have been petitioning? can we have been petitioning? can you have been petitioning? can they have been petitioning?

Interro-negative form

Simple form	V-ing form
can't I petition? can't you petition? can't he petition? can't we petition? can't you petition? can't they petition?	can't I be petitioning? can't you be petitioning? can't he be petitioning? can't we be petitioning? can't you be petitioning? can't they be petitioning?
Perfect	V-ing perfect
can't I have petitioned? can't you have petitioned? can't he have petitioned? can't we have petitioned? can't you have petitioned? can't they have petitioned?	can't I have been petitioning? can't you have been petitioning? can't he have been petitioning? can't we have been petitioning? can't you have been petitioning? can't they have been petitioning?