must augment
Regular verb: augment - augmented- augmented

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must augment
you must augment
he must augment
we must augment
you must augment
they must augment 	I must be augmenting
you must be augmenting
he must be augmenting
we must be augmenting
you must be augmenting
they must be augmenting	I must have augmented
you must have augmented
he must have augmented
we must have augmented
you must have augmented
they must have augmented	I must have been augmenting
you must have been augmenting
he must have been augmenting
we must have been augmenting
you must have been augmenting
they must have been augmenting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't augment
you mustn't augment
he mustn't augment
we mustn't augment
you mustn't augment
they mustn't augment 	I mustn't be augmenting
you mustn't be augmenting
he mustn't be augmenting
we mustn't be augmenting
you mustn't be augmenting
they mustn't be augmenting	I mustn't have augmented
you mustn't have augmented
he mustn't have augmented
we mustn't have augmented
you mustn't have augmented
they mustn't have augmented	I mustn't have been augmenting
you mustn't have been augmenting
he mustn't have been augmenting
we mustn't have been augmenting
you mustn't have been augmenting
they mustn't have been augmenting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I augment?
must you augment?
must he augment?
must we augment?
must you augment?
must they augment? 	must I be augmenting?
must you be augmenting?
must he be augmenting?
must we be augmenting?
must you be augmenting?
must they be augmenting? 	must I have augmented?
must you have augmented?
must he have augmented?
must we have augmented?
must you have augmented?
must they have augmented? 	must I have been augmenting?
must you have been augmenting?
must he have been augmenting?
must we have been augmenting?
must you have been augmenting?
must they have been augmenting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I augment?
mustn't you augment?
mustn't he augment?
mustn't we augment?
mustn't you augment?
mustn't they augment? 	mustn't I be augmenting?
mustn't you be augmenting?
mustn't he be augmenting?
mustn't we be augmenting?
mustn't you be augmenting?
mustn't they be augmenting? 	mustn't I have augmented?
mustn't you have augmented?
mustn't he have augmented?
mustn't we have augmented?
mustn't you have augmented?
mustn't they have augmented? 	mustn't I have been augmenting?
mustn't you have been augmenting?
mustn't he have been augmenting?
mustn't we have been augmenting?
mustn't you have been augmenting?
mustn't they have been augmenting?