can jack
Verbo regular: jack - jacked- jacked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can jack
you can jack
she can jack
we can jack
you can jack
they can jack 	I can be jacking
you can be jacking
she can be jacking
we can be jacking
you can be jacking
they can be jacking	I can have jacked
you can have jacked
she can have jacked
we can have jacked
you can have jacked
they can have jacked	I can have been jacking
you can have been jacking
she can have been jacking
we can have been jacking
you can have been jacking
they can have been jacking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot jack
you cannot jack
she cannot jack
we cannot jack
you cannot jack
they cannot jack 	I cannot be jacking
you cannot be jacking
she cannot be jacking
we cannot be jacking
you cannot be jacking
they cannot be jacking	I cannot have jacked
you cannot have jacked
she cannot have jacked
we cannot have jacked
you cannot have jacked
they cannot have jacked	I cannot have been jacking
you cannot have been jacking
she cannot have been jacking
we cannot have been jacking
you cannot have been jacking
they cannot have been jacking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I jack?
can you jack?
can she jack?
can we jack?
can you jack?
can they jack? 	can I be jacking?
can you be jacking?
can she be jacking?
can we be jacking?
can you be jacking?
can they be jacking? 	can I have jacked?
can you have jacked?
can she have jacked?
can we have jacked?
can you have jacked?
can they have jacked? 	can I have been jacking?
can you have been jacking?
can she have been jacking?
can we have been jacking?
can you have been jacking?
can they have been jacking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not jack?
can you not jack?
can she not jack?
can we not jack?
can you not jack?
can they not jack? 	can I not be jacking?
can you not be jacking?
can she not be jacking?
can we not be jacking?
can you not be jacking?
can they not be jacking? 	can I not have jacked?
can you not have jacked?
can she not have jacked?
can we not have jacked?
can you not have jacked?
can they not have jacked? 	can I not have been jacking?
can you not have been jacking?
can she not have been jacking?
can we not have been jacking?
can you not have been jacking?
can they not have been jacking?