must discourage
Regular verb: discourage - discouraged- discouraged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must discourage
you must discourage
she must discourage
we must discourage
you must discourage
they must discourage 	I must be discouraging
you must be discouraging
she must be discouraging
we must be discouraging
you must be discouraging
they must be discouraging	I must have discouraged
you must have discouraged
she must have discouraged
we must have discouraged
you must have discouraged
they must have discouraged	I must have been discouraging
you must have been discouraging
she must have been discouraging
we must have been discouraging
you must have been discouraging
they must have been discouraging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't discourage
you mustn't discourage
she mustn't discourage
we mustn't discourage
you mustn't discourage
they mustn't discourage 	I mustn't be discouraging
you mustn't be discouraging
she mustn't be discouraging
we mustn't be discouraging
you mustn't be discouraging
they mustn't be discouraging	I mustn't have discouraged
you mustn't have discouraged
she mustn't have discouraged
we mustn't have discouraged
you mustn't have discouraged
they mustn't have discouraged	I mustn't have been discouraging
you mustn't have been discouraging
she mustn't have been discouraging
we mustn't have been discouraging
you mustn't have been discouraging
they mustn't have been discouraging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I discourage?
must you discourage?
must she discourage?
must we discourage?
must you discourage?
must they discourage? 	must I be discouraging?
must you be discouraging?
must she be discouraging?
must we be discouraging?
must you be discouraging?
must they be discouraging? 	must I have discouraged?
must you have discouraged?
must she have discouraged?
must we have discouraged?
must you have discouraged?
must they have discouraged? 	must I have been discouraging?
must you have been discouraging?
must she have been discouraging?
must we have been discouraging?
must you have been discouraging?
must they have been discouraging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I discourage?
mustn't you discourage?
mustn't she discourage?
mustn't we discourage?
mustn't you discourage?
mustn't they discourage? 	mustn't I be discouraging?
mustn't you be discouraging?
mustn't she be discouraging?
mustn't we be discouraging?
mustn't you be discouraging?
mustn't they be discouraging? 	mustn't I have discouraged?
mustn't you have discouraged?
mustn't she have discouraged?
mustn't we have discouraged?
mustn't you have discouraged?
mustn't they have discouraged? 	mustn't I have been discouraging?
mustn't you have been discouraging?
mustn't she have been discouraging?
mustn't we have been discouraging?
mustn't you have been discouraging?
mustn't they have been discouraging?