must stock
Regular verb: stock - stocked- stocked

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

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

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

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