could windrow
Verbo regular: windrow - windrowed- windrowed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could windrow
you could windrow
she could windrow
we could windrow
you could windrow
they could windrow 	I could be windrowing
you could be windrowing
she could be windrowing
we could be windrowing
you could be windrowing
they could be windrowing	I could have windrowed
you could have windrowed
she could have windrowed
we could have windrowed
you could have windrowed
they could have windrowed	I could have been windrowing
you could have been windrowing
she could have been windrowing
we could have been windrowing
you could have been windrowing
they could have been windrowing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not windrow
you could not windrow
she could not windrow
we could not windrow
you could not windrow
they could not windrow 	I could not be windrowing
you could not be windrowing
she could not be windrowing
we could not be windrowing
you could not be windrowing
they could not be windrowing	I could not have windrowed
you could not have windrowed
she could not have windrowed
we could not have windrowed
you could not have windrowed
they could not have windrowed	I could not have been windrowing
you could not have been windrowing
she could not have been windrowing
we could not have been windrowing
you could not have been windrowing
they could not have been windrowing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I windrow?
could you windrow?
could she windrow?
could we windrow?
could you windrow?
could they windrow? 	could I be windrowing?
could you be windrowing?
could she be windrowing?
could we be windrowing?
could you be windrowing?
could they be windrowing? 	could I have windrowed?
could you have windrowed?
could she have windrowed?
could we have windrowed?
could you have windrowed?
could they have windrowed? 	could I have been windrowing?
could you have been windrowing?
could she have been windrowing?
could we have been windrowing?
could you have been windrowing?
could they have been windrowing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not windrow?
could you not windrow?
could she not windrow?
could we not windrow?
could you not windrow?
could they not windrow? 	could I not be windrowing?
could you not be windrowing?
could she not be windrowing?
could we not be windrowing?
could you not be windrowing?
could they not be windrowing? 	could I not have windrowed?
could you not have windrowed?
could she not have windrowed?
could we not have windrowed?
could you not have windrowed?
could they not have windrowed? 	could I not have been windrowing?
could you not have been windrowing?
could she not have been windrowing?
could we not have been windrowing?
could you not have been windrowing?
could they not have been windrowing?