English verb conjugation
CAN PERFORM

Regular verb: perform - performed - performed

Affirmation

Simple form	V-ing form
I can perform you can perform she can perform we can perform you can perform they can perform	I can be performing you can be performing she can be performing we can be performing you can be performing they can be performing
Perfect	V-ing perfect
I can have performed you can have performed she can have performed we can have performed you can have performed they can have performed	I can have been performing you can have been performing she can have been performing we can have been performing you can have been performing they can have been performing

Negation

Simple form	V-ing form
I can't perform you can't perform she can't perform we can't perform you can't perform they can't perform	I can't be performing you can't be performing she can't be performing we can't be performing you can't be performing they can't be performing
Perfect	V-ing perfect
I can't have performed you can't have performed she can't have performed we can't have performed you can't have performed they can't have performed	I can't have been performing you can't have been performing she can't have been performing we can't have been performing you can't have been performing they can't have been performing

Interrogative form

Simple form	V-ing form
can I perform? can you perform? can she perform? can we perform? can you perform? can they perform?	can I be performing? can you be performing? can she be performing? can we be performing? can you be performing? can they be performing?
Perfect	V-ing perfect
can I have performed? can you have performed? can she have performed? can we have performed? can you have performed? can they have performed?	can I have been performing? can you have been performing? can she have been performing? can we have been performing? can you have been performing? can they have been performing?

Interro-negative form

Simple form	V-ing form
can't I perform? can't you perform? can't she perform? can't we perform? can't you perform? can't they perform?	can't I be performing? can't you be performing? can't she be performing? can't we be performing? can't you be performing? can't they be performing?
Perfect	V-ing perfect
can't I have performed? can't you have performed? can't she have performed? can't we have performed? can't you have performed? can't they have performed?	can't I have been performing? can't you have been performing? can't she have been performing? can't we have been performing? can't you have been performing? can't they have been performing?