could shoal
Verbo regular: shoal - shoaled- shoaled

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could shoal
you could shoal
he could shoal
we could shoal
you could shoal
they could shoal 	I could be shoaling
you could be shoaling
he could be shoaling
we could be shoaling
you could be shoaling
they could be shoaling	I could have shoaled
you could have shoaled
he could have shoaled
we could have shoaled
you could have shoaled
they could have shoaled	I could have been shoaling
you could have been shoaling
he could have been shoaling
we could have been shoaling
you could have been shoaling
they could have been shoaling	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not shoal
you could not shoal
he could not shoal
we could not shoal
you could not shoal
they could not shoal 	I could not be shoaling
you could not be shoaling
he could not be shoaling
we could not be shoaling
you could not be shoaling
they could not be shoaling	I could not have shoaled
you could not have shoaled
he could not have shoaled
we could not have shoaled
you could not have shoaled
they could not have shoaled	I could not have been shoaling
you could not have been shoaling
he could not have been shoaling
we could not have been shoaling
you could not have been shoaling
they could not have been shoaling	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I shoal?
could you shoal?
could he shoal?
could we shoal?
could you shoal?
could they shoal? 	could I be shoaling?
could you be shoaling?
could he be shoaling?
could we be shoaling?
could you be shoaling?
could they be shoaling? 	could I have shoaled?
could you have shoaled?
could he have shoaled?
could we have shoaled?
could you have shoaled?
could they have shoaled? 	could I have been shoaling?
could you have been shoaling?
could he have been shoaling?
could we have been shoaling?
could you have been shoaling?
could they have been shoaling? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not shoal?
could you not shoal?
could he not shoal?
could we not shoal?
could you not shoal?
could they not shoal? 	could I not be shoaling?
could you not be shoaling?
could he not be shoaling?
could we not be shoaling?
could you not be shoaling?
could they not be shoaling? 	could I not have shoaled?
could you not have shoaled?
could he not have shoaled?
could we not have shoaled?
could you not have shoaled?
could they not have shoaled? 	could I not have been shoaling?
could you not have been shoaling?
could he not have been shoaling?
could we not have been shoaling?
could you not have been shoaling?
could they not have been shoaling?