must uncork
Regular verb: uncork - uncorked- uncorked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must uncork
you must uncork
she must uncork
we must uncork
you must uncork
they must uncork 	I must be uncorking
you must be uncorking
she must be uncorking
we must be uncorking
you must be uncorking
they must be uncorking	I must have uncorked
you must have uncorked
she must have uncorked
we must have uncorked
you must have uncorked
they must have uncorked	I must have been uncorking
you must have been uncorking
she must have been uncorking
we must have been uncorking
you must have been uncorking
they must have been uncorking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't uncork
you mustn't uncork
she mustn't uncork
we mustn't uncork
you mustn't uncork
they mustn't uncork 	I mustn't be uncorking
you mustn't be uncorking
she mustn't be uncorking
we mustn't be uncorking
you mustn't be uncorking
they mustn't be uncorking	I mustn't have uncorked
you mustn't have uncorked
she mustn't have uncorked
we mustn't have uncorked
you mustn't have uncorked
they mustn't have uncorked	I mustn't have been uncorking
you mustn't have been uncorking
she mustn't have been uncorking
we mustn't have been uncorking
you mustn't have been uncorking
they mustn't have been uncorking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I uncork?
must you uncork?
must she uncork?
must we uncork?
must you uncork?
must they uncork? 	must I be uncorking?
must you be uncorking?
must she be uncorking?
must we be uncorking?
must you be uncorking?
must they be uncorking? 	must I have uncorked?
must you have uncorked?
must she have uncorked?
must we have uncorked?
must you have uncorked?
must they have uncorked? 	must I have been uncorking?
must you have been uncorking?
must she have been uncorking?
must we have been uncorking?
must you have been uncorking?
must they have been uncorking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I uncork?
mustn't you uncork?
mustn't she uncork?
mustn't we uncork?
mustn't you uncork?
mustn't they uncork? 	mustn't I be uncorking?
mustn't you be uncorking?
mustn't she be uncorking?
mustn't we be uncorking?
mustn't you be uncorking?
mustn't they be uncorking? 	mustn't I have uncorked?
mustn't you have uncorked?
mustn't she have uncorked?
mustn't we have uncorked?
mustn't you have uncorked?
mustn't they have uncorked? 	mustn't I have been uncorking?
mustn't you have been uncorking?
mustn't she have been uncorking?
mustn't we have been uncorking?
mustn't you have been uncorking?
mustn't they have been uncorking?