can trouble
Verbo regular: trouble - troubled- troubled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can trouble
you can trouble
he can trouble
we can trouble
you can trouble
they can trouble 	I can be troubling
you can be troubling
he can be troubling
we can be troubling
you can be troubling
they can be troubling	I can have troubled
you can have troubled
he can have troubled
we can have troubled
you can have troubled
they can have troubled	I can have been troubling
you can have been troubling
he can have been troubling
we can have been troubling
you can have been troubling
they can have been troubling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot trouble
you cannot trouble
he cannot trouble
we cannot trouble
you cannot trouble
they cannot trouble 	I cannot be troubling
you cannot be troubling
he cannot be troubling
we cannot be troubling
you cannot be troubling
they cannot be troubling	I cannot have troubled
you cannot have troubled
he cannot have troubled
we cannot have troubled
you cannot have troubled
they cannot have troubled	I cannot have been troubling
you cannot have been troubling
he cannot have been troubling
we cannot have been troubling
you cannot have been troubling
they cannot have been troubling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I trouble?
can you trouble?
can he trouble?
can we trouble?
can you trouble?
can they trouble? 	can I be troubling?
can you be troubling?
can he be troubling?
can we be troubling?
can you be troubling?
can they be troubling? 	can I have troubled?
can you have troubled?
can he have troubled?
can we have troubled?
can you have troubled?
can they have troubled? 	can I have been troubling?
can you have been troubling?
can he have been troubling?
can we have been troubling?
can you have been troubling?
can they have been troubling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not trouble?
can you not trouble?
can he not trouble?
can we not trouble?
can you not trouble?
can they not trouble? 	can I not be troubling?
can you not be troubling?
can he not be troubling?
can we not be troubling?
can you not be troubling?
can they not be troubling? 	can I not have troubled?
can you not have troubled?
can he not have troubled?
can we not have troubled?
can you not have troubled?
can they not have troubled? 	can I not have been troubling?
can you not have been troubling?
can he not have been troubling?
can we not have been troubling?
can you not have been troubling?
can they not have been troubling?