must loo
Regular verb: loo - looed- looed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must loo
you must loo
she must loo
we must loo
you must loo
they must loo 	I must be looing
you must be looing
she must be looing
we must be looing
you must be looing
they must be looing	I must have looed
you must have looed
she must have looed
we must have looed
you must have looed
they must have looed	I must have been looing
you must have been looing
she must have been looing
we must have been looing
you must have been looing
they must have been looing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not loo
you must not loo
she must not loo
we must not loo
you must not loo
they must not loo 	I must not be looing
you must not be looing
she must not be looing
we must not be looing
you must not be looing
they must not be looing	I must not have looed
you must not have looed
she must not have looed
we must not have looed
you must not have looed
they must not have looed	I must not have been looing
you must not have been looing
she must not have been looing
we must not have been looing
you must not have been looing
they must not have been looing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I loo?
must you loo?
must she loo?
must we loo?
must you loo?
must they loo? 	must I be looing?
must you be looing?
must she be looing?
must we be looing?
must you be looing?
must they be looing? 	must I have looed?
must you have looed?
must she have looed?
must we have looed?
must you have looed?
must they have looed? 	must I have been looing?
must you have been looing?
must she have been looing?
must we have been looing?
must you have been looing?
must they have been looing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not loo?
must you not loo?
must she not loo?
must we not loo?
must you not loo?
must they not loo? 	must I not be looing?
must you not be looing?
must she not be looing?
must we not be looing?
must you not be looing?
must they not be looing? 	must I not have looed?
must you not have looed?
must she not have looed?
must we not have looed?
must you not have looed?
must they not have looed? 	must I not have been looing?
must you not have been looing?
must she not have been looing?
must we not have been looing?
must you not have been looing?
must they not have been looing?