must descry
Regular verb: descry - descried- descried

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must descry
you must descry
she must descry
we must descry
you must descry
they must descry 	I must be descrying
you must be descrying
she must be descrying
we must be descrying
you must be descrying
they must be descrying	I must have descried
you must have descried
she must have descried
we must have descried
you must have descried
they must have descried	I must have been descrying
you must have been descrying
she must have been descrying
we must have been descrying
you must have been descrying
they must have been descrying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't descry
you mustn't descry
she mustn't descry
we mustn't descry
you mustn't descry
they mustn't descry 	I mustn't be descrying
you mustn't be descrying
she mustn't be descrying
we mustn't be descrying
you mustn't be descrying
they mustn't be descrying	I mustn't have descried
you mustn't have descried
she mustn't have descried
we mustn't have descried
you mustn't have descried
they mustn't have descried	I mustn't have been descrying
you mustn't have been descrying
she mustn't have been descrying
we mustn't have been descrying
you mustn't have been descrying
they mustn't have been descrying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I descry?
must you descry?
must she descry?
must we descry?
must you descry?
must they descry? 	must I be descrying?
must you be descrying?
must she be descrying?
must we be descrying?
must you be descrying?
must they be descrying? 	must I have descried?
must you have descried?
must she have descried?
must we have descried?
must you have descried?
must they have descried? 	must I have been descrying?
must you have been descrying?
must she have been descrying?
must we have been descrying?
must you have been descrying?
must they have been descrying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I descry?
mustn't you descry?
mustn't she descry?
mustn't we descry?
mustn't you descry?
mustn't they descry? 	mustn't I be descrying?
mustn't you be descrying?
mustn't she be descrying?
mustn't we be descrying?
mustn't you be descrying?
mustn't they be descrying? 	mustn't I have descried?
mustn't you have descried?
mustn't she have descried?
mustn't we have descried?
mustn't you have descried?
mustn't they have descried? 	mustn't I have been descrying?
mustn't you have been descrying?
mustn't she have been descrying?
mustn't we have been descrying?
mustn't you have been descrying?
mustn't they have been descrying?