English verb conjugation
CAN PUSH

Regular verb: push - pushed - pushed

Affirmation

Simple form	V-ing form
I can push you can push he can push we can push you can push they can push	I can be pushing you can be pushing he can be pushing we can be pushing you can be pushing they can be pushing
Perfect	V-ing perfect
I can have pushed you can have pushed he can have pushed we can have pushed you can have pushed they can have pushed	I can have been pushing you can have been pushing he can have been pushing we can have been pushing you can have been pushing they can have been pushing

Negation

Simple form	V-ing form
I can't push you can't push he can't push we can't push you can't push they can't push	I can't be pushing you can't be pushing he can't be pushing we can't be pushing you can't be pushing they can't be pushing
Perfect	V-ing perfect
I can't have pushed you can't have pushed he can't have pushed we can't have pushed you can't have pushed they can't have pushed	I can't have been pushing you can't have been pushing he can't have been pushing we can't have been pushing you can't have been pushing they can't have been pushing

Interrogative form

Simple form	V-ing form
can I push? can you push? can he push? can we push? can you push? can they push?	can I be pushing? can you be pushing? can he be pushing? can we be pushing? can you be pushing? can they be pushing?
Perfect	V-ing perfect
can I have pushed? can you have pushed? can he have pushed? can we have pushed? can you have pushed? can they have pushed?	can I have been pushing? can you have been pushing? can he have been pushing? can we have been pushing? can you have been pushing? can they have been pushing?

Interro-negative form

Simple form	V-ing form
can't I push? can't you push? can't he push? can't we push? can't you push? can't they push?	can't I be pushing? can't you be pushing? can't he be pushing? can't we be pushing? can't you be pushing? can't they be pushing?
Perfect	V-ing perfect
can't I have pushed? can't you have pushed? can't he have pushed? can't we have pushed? can't you have pushed? can't they have pushed?	can't I have been pushing? can't you have been pushing? can't he have been pushing? can't we have been pushing? can't you have been pushing? can't they have been pushing?