must undock
Regular verb: undock - undocked- undocked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must undock
you must undock
she must undock
we must undock
you must undock
they must undock 	I must be undocking
you must be undocking
she must be undocking
we must be undocking
you must be undocking
they must be undocking	I must have undocked
you must have undocked
she must have undocked
we must have undocked
you must have undocked
they must have undocked	I must have been undocking
you must have been undocking
she must have been undocking
we must have been undocking
you must have been undocking
they must have been undocking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't undock
you mustn't undock
she mustn't undock
we mustn't undock
you mustn't undock
they mustn't undock 	I mustn't be undocking
you mustn't be undocking
she mustn't be undocking
we mustn't be undocking
you mustn't be undocking
they mustn't be undocking	I mustn't have undocked
you mustn't have undocked
she mustn't have undocked
we mustn't have undocked
you mustn't have undocked
they mustn't have undocked	I mustn't have been undocking
you mustn't have been undocking
she mustn't have been undocking
we mustn't have been undocking
you mustn't have been undocking
they mustn't have been undocking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I undock?
must you undock?
must she undock?
must we undock?
must you undock?
must they undock? 	must I be undocking?
must you be undocking?
must she be undocking?
must we be undocking?
must you be undocking?
must they be undocking? 	must I have undocked?
must you have undocked?
must she have undocked?
must we have undocked?
must you have undocked?
must they have undocked? 	must I have been undocking?
must you have been undocking?
must she have been undocking?
must we have been undocking?
must you have been undocking?
must they have been undocking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I undock?
mustn't you undock?
mustn't she undock?
mustn't we undock?
mustn't you undock?
mustn't they undock? 	mustn't I be undocking?
mustn't you be undocking?
mustn't she be undocking?
mustn't we be undocking?
mustn't you be undocking?
mustn't they be undocking? 	mustn't I have undocked?
mustn't you have undocked?
mustn't she have undocked?
mustn't we have undocked?
mustn't you have undocked?
mustn't they have undocked? 	mustn't I have been undocking?
mustn't you have been undocking?
mustn't she have been undocking?
mustn't we have been undocking?
mustn't you have been undocking?
mustn't they have been undocking?