can stock
Regular verb: stock - stocked- stocked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can stock
you can stock
he can stock
we can stock
you can stock
they can stock 	I can be stocking
you can be stocking
he can be stocking
we can be stocking
you can be stocking
they can be stocking	I can have stocked
you can have stocked
he 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
he 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 can't stock
you can't stock
he can't stock
we can't stock
you can't stock
they can't stock 	I can't be stocking
you can't be stocking
he can't be stocking
we can't be stocking
you can't be stocking
they can't be stocking	I can't have stocked
you can't have stocked
he can't have stocked
we can't have stocked
you can't have stocked
they can't have stocked	I can't have been stocking
you can't have been stocking
he can't have been stocking
we can't have been stocking
you can't have been stocking
they can't have been stocking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I stock?
can you stock?
can he stock?
can we stock?
can you stock?
can they stock? 	can I be stocking?
can you be stocking?
can he be stocking?
can we be stocking?
can you be stocking?
can they be stocking? 	can I have stocked?
can you have stocked?
can he 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 he 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't I stock?
can't you stock?
can't he stock?
can't we stock?
can't you stock?
can't they stock? 	can't I be stocking?
can't you be stocking?
can't he be stocking?
can't we be stocking?
can't you be stocking?
can't they be stocking? 	can't I have stocked?
can't you have stocked?
can't he have stocked?
can't we have stocked?
can't you have stocked?
can't they have stocked? 	can't I have been stocking?
can't you have been stocking?
can't he have been stocking?
can't we have been stocking?
can't you have been stocking?
can't they have been stocking?