must stroll
Regular verb: stroll - strolled- strolled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must stroll
you must stroll
she must stroll
we must stroll
you must stroll
they must stroll 	I must be strolling
you must be strolling
she must be strolling
we must be strolling
you must be strolling
they must be strolling	I must have strolled
you must have strolled
she must have strolled
we must have strolled
you must have strolled
they must have strolled	I must have been strolling
you must have been strolling
she must have been strolling
we must have been strolling
you must have been strolling
they must have been strolling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not stroll
you must not stroll
she must not stroll
we must not stroll
you must not stroll
they must not stroll 	I must not be strolling
you must not be strolling
she must not be strolling
we must not be strolling
you must not be strolling
they must not be strolling	I must not have strolled
you must not have strolled
she must not have strolled
we must not have strolled
you must not have strolled
they must not have strolled	I must not have been strolling
you must not have been strolling
she must not have been strolling
we must not have been strolling
you must not have been strolling
they must not have been strolling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I stroll?
must you stroll?
must she stroll?
must we stroll?
must you stroll?
must they stroll? 	must I be strolling?
must you be strolling?
must she be strolling?
must we be strolling?
must you be strolling?
must they be strolling? 	must I have strolled?
must you have strolled?
must she have strolled?
must we have strolled?
must you have strolled?
must they have strolled? 	must I have been strolling?
must you have been strolling?
must she have been strolling?
must we have been strolling?
must you have been strolling?
must they have been strolling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not stroll?
must you not stroll?
must she not stroll?
must we not stroll?
must you not stroll?
must they not stroll? 	must I not be strolling?
must you not be strolling?
must she not be strolling?
must we not be strolling?
must you not be strolling?
must they not be strolling? 	must I not have strolled?
must you not have strolled?
must she not have strolled?
must we not have strolled?
must you not have strolled?
must they not have strolled? 	must I not have been strolling?
must you not have been strolling?
must she not have been strolling?
must we not have been strolling?
must you not have been strolling?
must they not have been strolling?