must paper-train
Regular verb: paper-train - paper-trained- paper-trained

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must paper-train
you must paper-train
she must paper-train
we must paper-train
you must paper-train
they must paper-train 	I must be paper-training
you must be paper-training
she must be paper-training
we must be paper-training
you must be paper-training
they must be paper-training	I must have paper-trained
you must have paper-trained
she must have paper-trained
we must have paper-trained
you must have paper-trained
they must have paper-trained	I must have been paper-training
you must have been paper-training
she must have been paper-training
we must have been paper-training
you must have been paper-training
they must have been paper-training	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't paper-train
you mustn't paper-train
she mustn't paper-train
we mustn't paper-train
you mustn't paper-train
they mustn't paper-train 	I mustn't be paper-training
you mustn't be paper-training
she mustn't be paper-training
we mustn't be paper-training
you mustn't be paper-training
they mustn't be paper-training	I mustn't have paper-trained
you mustn't have paper-trained
she mustn't have paper-trained
we mustn't have paper-trained
you mustn't have paper-trained
they mustn't have paper-trained	I mustn't have been paper-training
you mustn't have been paper-training
she mustn't have been paper-training
we mustn't have been paper-training
you mustn't have been paper-training
they mustn't have been paper-training	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I paper-train?
must you paper-train?
must she paper-train?
must we paper-train?
must you paper-train?
must they paper-train? 	must I be paper-training?
must you be paper-training?
must she be paper-training?
must we be paper-training?
must you be paper-training?
must they be paper-training? 	must I have paper-trained?
must you have paper-trained?
must she have paper-trained?
must we have paper-trained?
must you have paper-trained?
must they have paper-trained? 	must I have been paper-training?
must you have been paper-training?
must she have been paper-training?
must we have been paper-training?
must you have been paper-training?
must they have been paper-training? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I paper-train?
mustn't you paper-train?
mustn't she paper-train?
mustn't we paper-train?
mustn't you paper-train?
mustn't they paper-train? 	mustn't I be paper-training?
mustn't you be paper-training?
mustn't she be paper-training?
mustn't we be paper-training?
mustn't you be paper-training?
mustn't they be paper-training? 	mustn't I have paper-trained?
mustn't you have paper-trained?
mustn't she have paper-trained?
mustn't we have paper-trained?
mustn't you have paper-trained?
mustn't they have paper-trained? 	mustn't I have been paper-training?
mustn't you have been paper-training?
mustn't she have been paper-training?
mustn't we have been paper-training?
mustn't you have been paper-training?
mustn't they have been paper-training?