could yelp
Verbo regular: yelp - yelped- yelped

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could yelp
you could yelp
she could yelp
we could yelp
you could yelp
they could yelp 	I could be yelping
you could be yelping
she could be yelping
we could be yelping
you could be yelping
they could be yelping	I could have yelped
you could have yelped
she could have yelped
we could have yelped
you could have yelped
they could have yelped	I could have been yelping
you could have been yelping
she could have been yelping
we could have been yelping
you could have been yelping
they could have been yelping	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not yelp
you could not yelp
she could not yelp
we could not yelp
you could not yelp
they could not yelp 	I could not be yelping
you could not be yelping
she could not be yelping
we could not be yelping
you could not be yelping
they could not be yelping	I could not have yelped
you could not have yelped
she could not have yelped
we could not have yelped
you could not have yelped
they could not have yelped	I could not have been yelping
you could not have been yelping
she could not have been yelping
we could not have been yelping
you could not have been yelping
they could not have been yelping	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I yelp?
could you yelp?
could she yelp?
could we yelp?
could you yelp?
could they yelp? 	could I be yelping?
could you be yelping?
could she be yelping?
could we be yelping?
could you be yelping?
could they be yelping? 	could I have yelped?
could you have yelped?
could she have yelped?
could we have yelped?
could you have yelped?
could they have yelped? 	could I have been yelping?
could you have been yelping?
could she have been yelping?
could we have been yelping?
could you have been yelping?
could they have been yelping? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not yelp?
could you not yelp?
could she not yelp?
could we not yelp?
could you not yelp?
could they not yelp? 	could I not be yelping?
could you not be yelping?
could she not be yelping?
could we not be yelping?
could you not be yelping?
could they not be yelping? 	could I not have yelped?
could you not have yelped?
could she not have yelped?
could we not have yelped?
could you not have yelped?
could they not have yelped? 	could I not have been yelping?
could you not have been yelping?
could she not have been yelping?
could we not have been yelping?
could you not have been yelping?
could they not have been yelping?