English verb conjugation
CAN STOCK

Regular verb: stock - stocked - stocked

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?