could stock
Verbo regular: stock - stocked- stocked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could stock
you could stock
she could stock
we could stock
you could stock
they could stock 	I could be stocking
you could be stocking
she could be stocking
we could be stocking
you could be stocking
they could be stocking	I could have stocked
you could have stocked
she could have stocked
we could have stocked
you could have stocked
they could have stocked	I could have been stocking
you could have been stocking
she could have been stocking
we could have been stocking
you could have been stocking
they could have been stocking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not stock
you could not stock
she could not stock
we could not stock
you could not stock
they could not stock 	I could not be stocking
you could not be stocking
she could not be stocking
we could not be stocking
you could not be stocking
they could not be stocking	I could not have stocked
you could not have stocked
she could not have stocked
we could not have stocked
you could not have stocked
they could not have stocked	I could not have been stocking
you could not have been stocking
she could not have been stocking
we could not have been stocking
you could not have been stocking
they could not have been stocking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I stock?
could you stock?
could she stock?
could we stock?
could you stock?
could they stock? 	could I be stocking?
could you be stocking?
could she be stocking?
could we be stocking?
could you be stocking?
could they be stocking? 	could I have stocked?
could you have stocked?
could she have stocked?
could we have stocked?
could you have stocked?
could they have stocked? 	could I have been stocking?
could you have been stocking?
could she have been stocking?
could we have been stocking?
could you have been stocking?
could they have been stocking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not stock?
could you not stock?
could she not stock?
could we not stock?
could you not stock?
could they not stock? 	could I not be stocking?
could you not be stocking?
could she not be stocking?
could we not be stocking?
could you not be stocking?
could they not be stocking? 	could I not have stocked?
could you not have stocked?
could she not have stocked?
could we not have stocked?
could you not have stocked?
could they not have stocked? 	could I not have been stocking?
could you not have been stocking?
could she not have been stocking?
could we not have been stocking?
could you not have been stocking?
could they not have been stocking?