English verb conjugation
CAN PLAY

Regular verb: play - played - played

Affirmation

Simple form	V-ing form
I can play you can play he can play we can play you can play they can play	I can be playing you can be playing he can be playing we can be playing you can be playing they can be playing
Perfect	V-ing perfect
I can have played you can have played he can have played we can have played you can have played they can have played	I can have been playing you can have been playing he can have been playing we can have been playing you can have been playing they can have been playing

Negation

Simple form	V-ing form
I can't play you can't play he can't play we can't play you can't play they can't play	I can't be playing you can't be playing he can't be playing we can't be playing you can't be playing they can't be playing
Perfect	V-ing perfect
I can't have played you can't have played he can't have played we can't have played you can't have played they can't have played	I can't have been playing you can't have been playing he can't have been playing we can't have been playing you can't have been playing they can't have been playing

Interrogative form

Simple form	V-ing form
can I play? can you play? can he play? can we play? can you play? can they play?	can I be playing? can you be playing? can he be playing? can we be playing? can you be playing? can they be playing?
Perfect	V-ing perfect
can I have played? can you have played? can he have played? can we have played? can you have played? can they have played?	can I have been playing? can you have been playing? can he have been playing? can we have been playing? can you have been playing? can they have been playing?

Interro-negative form

Simple form	V-ing form
can't I play? can't you play? can't he play? can't we play? can't you play? can't they play?	can't I be playing? can't you be playing? can't he be playing? can't we be playing? can't you be playing? can't they be playing?
Perfect	V-ing perfect
can't I have played? can't you have played? can't he have played? can't we have played? can't you have played? can't they have played?	can't I have been playing? can't you have been playing? can't he have been playing? can't we have been playing? can't you have been playing? can't they have been playing?