can obstruct
Verbo regular: obstruct - obstructed- obstructed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can obstruct
you can obstruct
he can obstruct
we can obstruct
you can obstruct
they can obstruct 	I can be obstructing
you can be obstructing
he can be obstructing
we can be obstructing
you can be obstructing
they can be obstructing	I can have obstructed
you can have obstructed
he can have obstructed
we can have obstructed
you can have obstructed
they can have obstructed	I can have been obstructing
you can have been obstructing
he can have been obstructing
we can have been obstructing
you can have been obstructing
they can have been obstructing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can't obstruct
you can't obstruct
he can't obstruct
we can't obstruct
you can't obstruct
they can't obstruct 	I can't be obstructing
you can't be obstructing
he can't be obstructing
we can't be obstructing
you can't be obstructing
they can't be obstructing	I can't have obstructed
you can't have obstructed
he can't have obstructed
we can't have obstructed
you can't have obstructed
they can't have obstructed	I can't have been obstructing
you can't have been obstructing
he can't have been obstructing
we can't have been obstructing
you can't have been obstructing
they can't have been obstructing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I obstruct?
can you obstruct?
can he obstruct?
can we obstruct?
can you obstruct?
can they obstruct? 	can I be obstructing?
can you be obstructing?
can he be obstructing?
can we be obstructing?
can you be obstructing?
can they be obstructing? 	can I have obstructed?
can you have obstructed?
can he have obstructed?
can we have obstructed?
can you have obstructed?
can they have obstructed? 	can I have been obstructing?
can you have been obstructing?
can he have been obstructing?
can we have been obstructing?
can you have been obstructing?
can they have been obstructing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can't I obstruct?
can't you obstruct?
can't he obstruct?
can't we obstruct?
can't you obstruct?
can't they obstruct? 	can't I be obstructing?
can't you be obstructing?
can't he be obstructing?
can't we be obstructing?
can't you be obstructing?
can't they be obstructing? 	can't I have obstructed?
can't you have obstructed?
can't he have obstructed?
can't we have obstructed?
can't you have obstructed?
can't they have obstructed? 	can't I have been obstructing?
can't you have been obstructing?
can't he have been obstructing?
can't we have been obstructing?
can't you have been obstructing?
can't they have been obstructing?