can stock
Regular verb: stock - stocked- stocked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can stock
you can stock
she can stock
we can stock
you can stock
they can stock 	I can be stocking
you can be stocking
she can be stocking
we can be stocking
you can be stocking
they can be stocking	I can have stocked
you can have stocked
she can have stocked
we can have stocked
you can have stocked
they can have stocked	I can have been stocking
you can have been stocking
she can have been stocking
we can have been stocking
you can have been stocking
they can have been stocking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot stock
you cannot stock
she cannot stock
we cannot stock
you cannot stock
they cannot stock 	I cannot be stocking
you cannot be stocking
she cannot be stocking
we cannot be stocking
you cannot be stocking
they cannot be stocking	I cannot have stocked
you cannot have stocked
she cannot have stocked
we cannot have stocked
you cannot have stocked
they cannot have stocked	I cannot have been stocking
you cannot have been stocking
she cannot have been stocking
we cannot have been stocking
you cannot have been stocking
they cannot have been stocking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I stock?
can you stock?
can she stock?
can we stock?
can you stock?
can they stock? 	can I be stocking?
can you be stocking?
can she be stocking?
can we be stocking?
can you be stocking?
can they be stocking? 	can I have stocked?
can you have stocked?
can she have stocked?
can we have stocked?
can you have stocked?
can they have stocked? 	can I have been stocking?
can you have been stocking?
can she have been stocking?
can we have been stocking?
can you have been stocking?
can they have been stocking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not stock?
can you not stock?
can she not stock?
can we not stock?
can you not stock?
can they not stock? 	can I not be stocking?
can you not be stocking?
can she not be stocking?
can we not be stocking?
can you not be stocking?
can they not be stocking? 	can I not have stocked?
can you not have stocked?
can she not have stocked?
can we not have stocked?
can you not have stocked?
can they not have stocked? 	can I not have been stocking?
can you not have been stocking?
can she not have been stocking?
can we not have been stocking?
can you not have been stocking?
can they not have been stocking?