English verb conjugation
CAN PAT

Regular verb: pat - patted - patted

Affirmation

Simple form	V-ing form
I can pat you can pat he can pat we can pat you can pat they can pat	I can be patting you can be patting he can be patting we can be patting you can be patting they can be patting
Perfect	V-ing perfect
I can have patted you can have patted he can have patted we can have patted you can have patted they can have patted	I can have been patting you can have been patting he can have been patting we can have been patting you can have been patting they can have been patting

Negation

Simple form	V-ing form
I can't pat you can't pat he can't pat we can't pat you can't pat they can't pat	I can't be patting you can't be patting he can't be patting we can't be patting you can't be patting they can't be patting
Perfect	V-ing perfect
I can't have patted you can't have patted he can't have patted we can't have patted you can't have patted they can't have patted	I can't have been patting you can't have been patting he can't have been patting we can't have been patting you can't have been patting they can't have been patting

Interrogative form

Simple form	V-ing form
can I pat? can you pat? can he pat? can we pat? can you pat? can they pat?	can I be patting? can you be patting? can he be patting? can we be patting? can you be patting? can they be patting?
Perfect	V-ing perfect
can I have patted? can you have patted? can he have patted? can we have patted? can you have patted? can they have patted?	can I have been patting? can you have been patting? can he have been patting? can we have been patting? can you have been patting? can they have been patting?

Interro-negative form

Simple form	V-ing form
can't I pat? can't you pat? can't he pat? can't we pat? can't you pat? can't they pat?	can't I be patting? can't you be patting? can't he be patting? can't we be patting? can't you be patting? can't they be patting?
Perfect	V-ing perfect
can't I have patted? can't you have patted? can't he have patted? can't we have patted? can't you have patted? can't they have patted?	can't I have been patting? can't you have been patting? can't he have been patting? can't we have been patting? can't you have been patting? can't they have been patting?