must tease
Regular verb: tease - teased- teased

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must tease
you must tease
she must tease
we must tease
you must tease
they must tease 	I must be teasing
you must be teasing
she must be teasing
we must be teasing
you must be teasing
they must be teasing	I must have teased
you must have teased
she must have teased
we must have teased
you must have teased
they must have teased	I must have been teasing
you must have been teasing
she must have been teasing
we must have been teasing
you must have been teasing
they must have been teasing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't tease
you mustn't tease
she mustn't tease
we mustn't tease
you mustn't tease
they mustn't tease 	I mustn't be teasing
you mustn't be teasing
she mustn't be teasing
we mustn't be teasing
you mustn't be teasing
they mustn't be teasing	I mustn't have teased
you mustn't have teased
she mustn't have teased
we mustn't have teased
you mustn't have teased
they mustn't have teased	I mustn't have been teasing
you mustn't have been teasing
she mustn't have been teasing
we mustn't have been teasing
you mustn't have been teasing
they mustn't have been teasing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I tease?
must you tease?
must she tease?
must we tease?
must you tease?
must they tease? 	must I be teasing?
must you be teasing?
must she be teasing?
must we be teasing?
must you be teasing?
must they be teasing? 	must I have teased?
must you have teased?
must she have teased?
must we have teased?
must you have teased?
must they have teased? 	must I have been teasing?
must you have been teasing?
must she have been teasing?
must we have been teasing?
must you have been teasing?
must they have been teasing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I tease?
mustn't you tease?
mustn't she tease?
mustn't we tease?
mustn't you tease?
mustn't they tease? 	mustn't I be teasing?
mustn't you be teasing?
mustn't she be teasing?
mustn't we be teasing?
mustn't you be teasing?
mustn't they be teasing? 	mustn't I have teased?
mustn't you have teased?
mustn't she have teased?
mustn't we have teased?
mustn't you have teased?
mustn't they have teased? 	mustn't I have been teasing?
mustn't you have been teasing?
mustn't she have been teasing?
mustn't we have been teasing?
mustn't you have been teasing?
mustn't they have been teasing?