English verb conjugation
CAN PATTER

Regular verb: patter - pattered - pattered

Affirmation

Simple form	V-ing form
I can patter you can patter he can patter we can patter you can patter they can patter	I can be pattering you can be pattering he can be pattering we can be pattering you can be pattering they can be pattering
Perfect	V-ing perfect
I can have pattered you can have pattered he can have pattered we can have pattered you can have pattered they can have pattered	I can have been pattering you can have been pattering he can have been pattering we can have been pattering you can have been pattering they can have been pattering

Negation

Simple form	V-ing form
I cannot patter you cannot patter he cannot patter we cannot patter you cannot patter they cannot patter	I cannot be pattering you cannot be pattering he cannot be pattering we cannot be pattering you cannot be pattering they cannot be pattering
Perfect	V-ing perfect
I cannot have pattered you cannot have pattered he cannot have pattered we cannot have pattered you cannot have pattered they cannot have pattered	I cannot have been pattering you cannot have been pattering he cannot have been pattering we cannot have been pattering you cannot have been pattering they cannot have been pattering

Interrogative form

Simple form	V-ing form
can I patter? can you patter? can he patter? can we patter? can you patter? can they patter?	can I be pattering? can you be pattering? can he be pattering? can we be pattering? can you be pattering? can they be pattering?
Perfect	V-ing perfect
can I have pattered? can you have pattered? can he have pattered? can we have pattered? can you have pattered? can they have pattered?	can I have been pattering? can you have been pattering? can he have been pattering? can we have been pattering? can you have been pattering? can they have been pattering?

Interro-negative form

Simple form	V-ing form
can I not patter? can you not patter? can he not patter? can we not patter? can you not patter? can they not patter?	can I not be pattering? can you not be pattering? can he not be pattering? can we not be pattering? can you not be pattering? can they not be pattering?
Perfect	V-ing perfect
can I not have pattered? can you not have pattered? can he not have pattered? can we not have pattered? can you not have pattered? can they not have pattered?	can I not have been pattering? can you not have been pattering? can he not have been pattering? can we not have been pattering? can you not have been pattering? can they not have been pattering?