must ligate
Regular verb: ligate - ligated- ligated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must ligate
you must ligate
he must ligate
we must ligate
you must ligate
they must ligate 	I must be ligating
you must be ligating
he must be ligating
we must be ligating
you must be ligating
they must be ligating	I must have ligated
you must have ligated
he must have ligated
we must have ligated
you must have ligated
they must have ligated	I must have been ligating
you must have been ligating
he must have been ligating
we must have been ligating
you must have been ligating
they must have been ligating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't ligate
you mustn't ligate
he mustn't ligate
we mustn't ligate
you mustn't ligate
they mustn't ligate 	I mustn't be ligating
you mustn't be ligating
he mustn't be ligating
we mustn't be ligating
you mustn't be ligating
they mustn't be ligating	I mustn't have ligated
you mustn't have ligated
he mustn't have ligated
we mustn't have ligated
you mustn't have ligated
they mustn't have ligated	I mustn't have been ligating
you mustn't have been ligating
he mustn't have been ligating
we mustn't have been ligating
you mustn't have been ligating
they mustn't have been ligating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I ligate?
must you ligate?
must he ligate?
must we ligate?
must you ligate?
must they ligate? 	must I be ligating?
must you be ligating?
must he be ligating?
must we be ligating?
must you be ligating?
must they be ligating? 	must I have ligated?
must you have ligated?
must he have ligated?
must we have ligated?
must you have ligated?
must they have ligated? 	must I have been ligating?
must you have been ligating?
must he have been ligating?
must we have been ligating?
must you have been ligating?
must they have been ligating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I ligate?
mustn't you ligate?
mustn't he ligate?
mustn't we ligate?
mustn't you ligate?
mustn't they ligate? 	mustn't I be ligating?
mustn't you be ligating?
mustn't he be ligating?
mustn't we be ligating?
mustn't you be ligating?
mustn't they be ligating? 	mustn't I have ligated?
mustn't you have ligated?
mustn't he have ligated?
mustn't we have ligated?
mustn't you have ligated?
mustn't they have ligated? 	mustn't I have been ligating?
mustn't you have been ligating?
mustn't he have been ligating?
mustn't we have been ligating?
mustn't you have been ligating?
mustn't they have been ligating?