must truncate
Regular verb: truncate - truncated- truncated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must truncate
you must truncate
she must truncate
we must truncate
you must truncate
they must truncate 	I must be truncating
you must be truncating
she must be truncating
we must be truncating
you must be truncating
they must be truncating	I must have truncated
you must have truncated
she must have truncated
we must have truncated
you must have truncated
they must have truncated	I must have been truncating
you must have been truncating
she must have been truncating
we must have been truncating
you must have been truncating
they must have been truncating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't truncate
you mustn't truncate
she mustn't truncate
we mustn't truncate
you mustn't truncate
they mustn't truncate 	I mustn't be truncating
you mustn't be truncating
she mustn't be truncating
we mustn't be truncating
you mustn't be truncating
they mustn't be truncating	I mustn't have truncated
you mustn't have truncated
she mustn't have truncated
we mustn't have truncated
you mustn't have truncated
they mustn't have truncated	I mustn't have been truncating
you mustn't have been truncating
she mustn't have been truncating
we mustn't have been truncating
you mustn't have been truncating
they mustn't have been truncating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I truncate?
must you truncate?
must she truncate?
must we truncate?
must you truncate?
must they truncate? 	must I be truncating?
must you be truncating?
must she be truncating?
must we be truncating?
must you be truncating?
must they be truncating? 	must I have truncated?
must you have truncated?
must she have truncated?
must we have truncated?
must you have truncated?
must they have truncated? 	must I have been truncating?
must you have been truncating?
must she have been truncating?
must we have been truncating?
must you have been truncating?
must they have been truncating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I truncate?
mustn't you truncate?
mustn't she truncate?
mustn't we truncate?
mustn't you truncate?
mustn't they truncate? 	mustn't I be truncating?
mustn't you be truncating?
mustn't she be truncating?
mustn't we be truncating?
mustn't you be truncating?
mustn't they be truncating? 	mustn't I have truncated?
mustn't you have truncated?
mustn't she have truncated?
mustn't we have truncated?
mustn't you have truncated?
mustn't they have truncated? 	mustn't I have been truncating?
mustn't you have been truncating?
mustn't she have been truncating?
mustn't we have been truncating?
mustn't you have been truncating?
mustn't they have been truncating?