must plug
Regular verb: plug - plugged- plugged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must plug
you must plug
she must plug
we must plug
you must plug
they must plug 	I must be plugging
you must be plugging
she must be plugging
we must be plugging
you must be plugging
they must be plugging	I must have plugged
you must have plugged
she must have plugged
we must have plugged
you must have plugged
they must have plugged	I must have been plugging
you must have been plugging
she must have been plugging
we must have been plugging
you must have been plugging
they must have been plugging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't plug
you mustn't plug
she mustn't plug
we mustn't plug
you mustn't plug
they mustn't plug 	I mustn't be plugging
you mustn't be plugging
she mustn't be plugging
we mustn't be plugging
you mustn't be plugging
they mustn't be plugging	I mustn't have plugged
you mustn't have plugged
she mustn't have plugged
we mustn't have plugged
you mustn't have plugged
they mustn't have plugged	I mustn't have been plugging
you mustn't have been plugging
she mustn't have been plugging
we mustn't have been plugging
you mustn't have been plugging
they mustn't have been plugging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I plug?
must you plug?
must she plug?
must we plug?
must you plug?
must they plug? 	must I be plugging?
must you be plugging?
must she be plugging?
must we be plugging?
must you be plugging?
must they be plugging? 	must I have plugged?
must you have plugged?
must she have plugged?
must we have plugged?
must you have plugged?
must they have plugged? 	must I have been plugging?
must you have been plugging?
must she have been plugging?
must we have been plugging?
must you have been plugging?
must they have been plugging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I plug?
mustn't you plug?
mustn't she plug?
mustn't we plug?
mustn't you plug?
mustn't they plug? 	mustn't I be plugging?
mustn't you be plugging?
mustn't she be plugging?
mustn't we be plugging?
mustn't you be plugging?
mustn't they be plugging? 	mustn't I have plugged?
mustn't you have plugged?
mustn't she have plugged?
mustn't we have plugged?
mustn't you have plugged?
mustn't they have plugged? 	mustn't I have been plugging?
mustn't you have been plugging?
mustn't she have been plugging?
mustn't we have been plugging?
mustn't you have been plugging?
mustn't they have been plugging?