must navigate
Regular verb: navigate - navigated- navigated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must navigate
you must navigate
she must navigate
we must navigate
you must navigate
they must navigate 	I must be navigating
you must be navigating
she must be navigating
we must be navigating
you must be navigating
they must be navigating	I must have navigated
you must have navigated
she must have navigated
we must have navigated
you must have navigated
they must have navigated	I must have been navigating
you must have been navigating
she must have been navigating
we must have been navigating
you must have been navigating
they must have been navigating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't navigate
you mustn't navigate
she mustn't navigate
we mustn't navigate
you mustn't navigate
they mustn't navigate 	I mustn't be navigating
you mustn't be navigating
she mustn't be navigating
we mustn't be navigating
you mustn't be navigating
they mustn't be navigating	I mustn't have navigated
you mustn't have navigated
she mustn't have navigated
we mustn't have navigated
you mustn't have navigated
they mustn't have navigated	I mustn't have been navigating
you mustn't have been navigating
she mustn't have been navigating
we mustn't have been navigating
you mustn't have been navigating
they mustn't have been navigating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I navigate?
must you navigate?
must she navigate?
must we navigate?
must you navigate?
must they navigate? 	must I be navigating?
must you be navigating?
must she be navigating?
must we be navigating?
must you be navigating?
must they be navigating? 	must I have navigated?
must you have navigated?
must she have navigated?
must we have navigated?
must you have navigated?
must they have navigated? 	must I have been navigating?
must you have been navigating?
must she have been navigating?
must we have been navigating?
must you have been navigating?
must they have been navigating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I navigate?
mustn't you navigate?
mustn't she navigate?
mustn't we navigate?
mustn't you navigate?
mustn't they navigate? 	mustn't I be navigating?
mustn't you be navigating?
mustn't she be navigating?
mustn't we be navigating?
mustn't you be navigating?
mustn't they be navigating? 	mustn't I have navigated?
mustn't you have navigated?
mustn't she have navigated?
mustn't we have navigated?
mustn't you have navigated?
mustn't they have navigated? 	mustn't I have been navigating?
mustn't you have been navigating?
mustn't she have been navigating?
mustn't we have been navigating?
mustn't you have been navigating?
mustn't they have been navigating?