can leak
Regular verb: leak - leaked- leaked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can leak
you can leak
she can leak
we can leak
you can leak
they can leak 	I can be leaking
you can be leaking
she can be leaking
we can be leaking
you can be leaking
they can be leaking	I can have leaked
you can have leaked
she can have leaked
we can have leaked
you can have leaked
they can have leaked	I can have been leaking
you can have been leaking
she can have been leaking
we can have been leaking
you can have been leaking
they can have been leaking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot leak
you cannot leak
she cannot leak
we cannot leak
you cannot leak
they cannot leak 	I cannot be leaking
you cannot be leaking
she cannot be leaking
we cannot be leaking
you cannot be leaking
they cannot be leaking	I cannot have leaked
you cannot have leaked
she cannot have leaked
we cannot have leaked
you cannot have leaked
they cannot have leaked	I cannot have been leaking
you cannot have been leaking
she cannot have been leaking
we cannot have been leaking
you cannot have been leaking
they cannot have been leaking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I leak?
can you leak?
can she leak?
can we leak?
can you leak?
can they leak? 	can I be leaking?
can you be leaking?
can she be leaking?
can we be leaking?
can you be leaking?
can they be leaking? 	can I have leaked?
can you have leaked?
can she have leaked?
can we have leaked?
can you have leaked?
can they have leaked? 	can I have been leaking?
can you have been leaking?
can she have been leaking?
can we have been leaking?
can you have been leaking?
can they have been leaking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not leak?
can you not leak?
can she not leak?
can we not leak?
can you not leak?
can they not leak? 	can I not be leaking?
can you not be leaking?
can she not be leaking?
can we not be leaking?
can you not be leaking?
can they not be leaking? 	can I not have leaked?
can you not have leaked?
can she not have leaked?
can we not have leaked?
can you not have leaked?
can they not have leaked? 	can I not have been leaking?
can you not have been leaking?
can she not have been leaking?
can we not have been leaking?
can you not have been leaking?
can they not have been leaking?