must ta
Regular verb: ta - taed- taed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must ta
you must ta
she must ta
we must ta
you must ta
they must ta 	I must be taing
you must be taing
she must be taing
we must be taing
you must be taing
they must be taing	I must have taed
you must have taed
she must have taed
we must have taed
you must have taed
they must have taed	I must have been taing
you must have been taing
she must have been taing
we must have been taing
you must have been taing
they must have been taing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't ta
you mustn't ta
she mustn't ta
we mustn't ta
you mustn't ta
they mustn't ta 	I mustn't be taing
you mustn't be taing
she mustn't be taing
we mustn't be taing
you mustn't be taing
they mustn't be taing	I mustn't have taed
you mustn't have taed
she mustn't have taed
we mustn't have taed
you mustn't have taed
they mustn't have taed	I mustn't have been taing
you mustn't have been taing
she mustn't have been taing
we mustn't have been taing
you mustn't have been taing
they mustn't have been taing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I ta?
must you ta?
must she ta?
must we ta?
must you ta?
must they ta? 	must I be taing?
must you be taing?
must she be taing?
must we be taing?
must you be taing?
must they be taing? 	must I have taed?
must you have taed?
must she have taed?
must we have taed?
must you have taed?
must they have taed? 	must I have been taing?
must you have been taing?
must she have been taing?
must we have been taing?
must you have been taing?
must they have been taing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I ta?
mustn't you ta?
mustn't she ta?
mustn't we ta?
mustn't you ta?
mustn't they ta? 	mustn't I be taing?
mustn't you be taing?
mustn't she be taing?
mustn't we be taing?
mustn't you be taing?
mustn't they be taing? 	mustn't I have taed?
mustn't you have taed?
mustn't she have taed?
mustn't we have taed?
mustn't you have taed?
mustn't they have taed? 	mustn't I have been taing?
mustn't you have been taing?
mustn't she have been taing?
mustn't we have been taing?
mustn't you have been taing?
mustn't they have been taing?