can perk
Verbo regular: perk - perked- perked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can perk
you can perk
he can perk
we can perk
you can perk
they can perk 	I can be perking
you can be perking
he can be perking
we can be perking
you can be perking
they can be perking	I can have perked
you can have perked
he can have perked
we can have perked
you can have perked
they can have perked	I can have been perking
you can have been perking
he can have been perking
we can have been perking
you can have been perking
they can have been perking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can't perk
you can't perk
he can't perk
we can't perk
you can't perk
they can't perk 	I can't be perking
you can't be perking
he can't be perking
we can't be perking
you can't be perking
they can't be perking	I can't have perked
you can't have perked
he can't have perked
we can't have perked
you can't have perked
they can't have perked	I can't have been perking
you can't have been perking
he can't have been perking
we can't have been perking
you can't have been perking
they can't have been perking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I perk?
can you perk?
can he perk?
can we perk?
can you perk?
can they perk? 	can I be perking?
can you be perking?
can he be perking?
can we be perking?
can you be perking?
can they be perking? 	can I have perked?
can you have perked?
can he have perked?
can we have perked?
can you have perked?
can they have perked? 	can I have been perking?
can you have been perking?
can he have been perking?
can we have been perking?
can you have been perking?
can they have been perking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can't I perk?
can't you perk?
can't he perk?
can't we perk?
can't you perk?
can't they perk? 	can't I be perking?
can't you be perking?
can't he be perking?
can't we be perking?
can't you be perking?
can't they be perking? 	can't I have perked?
can't you have perked?
can't he have perked?
can't we have perked?
can't you have perked?
can't they have perked? 	can't I have been perking?
can't you have been perking?
can't he have been perking?
can't we have been perking?
can't you have been perking?
can't they have been perking?