must four-wheel
Regular verb: four-wheel - four-wheeled- four-wheeled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must four-wheel
you must four-wheel
she must four-wheel
we must four-wheel
you must four-wheel
they must four-wheel 	I must be four-wheeling
you must be four-wheeling
she must be four-wheeling
we must be four-wheeling
you must be four-wheeling
they must be four-wheeling	I must have four-wheeled
you must have four-wheeled
she must have four-wheeled
we must have four-wheeled
you must have four-wheeled
they must have four-wheeled	I must have been four-wheeling
you must have been four-wheeling
she must have been four-wheeling
we must have been four-wheeling
you must have been four-wheeling
they must have been four-wheeling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not four-wheel
you must not four-wheel
she must not four-wheel
we must not four-wheel
you must not four-wheel
they must not four-wheel 	I must not be four-wheeling
you must not be four-wheeling
she must not be four-wheeling
we must not be four-wheeling
you must not be four-wheeling
they must not be four-wheeling	I must not have four-wheeled
you must not have four-wheeled
she must not have four-wheeled
we must not have four-wheeled
you must not have four-wheeled
they must not have four-wheeled	I must not have been four-wheeling
you must not have been four-wheeling
she must not have been four-wheeling
we must not have been four-wheeling
you must not have been four-wheeling
they must not have been four-wheeling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I four-wheel?
must you four-wheel?
must she four-wheel?
must we four-wheel?
must you four-wheel?
must they four-wheel? 	must I be four-wheeling?
must you be four-wheeling?
must she be four-wheeling?
must we be four-wheeling?
must you be four-wheeling?
must they be four-wheeling? 	must I have four-wheeled?
must you have four-wheeled?
must she have four-wheeled?
must we have four-wheeled?
must you have four-wheeled?
must they have four-wheeled? 	must I have been four-wheeling?
must you have been four-wheeling?
must she have been four-wheeling?
must we have been four-wheeling?
must you have been four-wheeling?
must they have been four-wheeling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not four-wheel?
must you not four-wheel?
must she not four-wheel?
must we not four-wheel?
must you not four-wheel?
must they not four-wheel? 	must I not be four-wheeling?
must you not be four-wheeling?
must she not be four-wheeling?
must we not be four-wheeling?
must you not be four-wheeling?
must they not be four-wheeling? 	must I not have four-wheeled?
must you not have four-wheeled?
must she not have four-wheeled?
must we not have four-wheeled?
must you not have four-wheeled?
must they not have four-wheeled? 	must I not have been four-wheeling?
must you not have been four-wheeling?
must she not have been four-wheeling?
must we not have been four-wheeling?
must you not have been four-wheeling?
must they not have been four-wheeling?