must undrape
Regular verb: undrape - undraped- undraped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must undrape
you must undrape
he must undrape
we must undrape
you must undrape
they must undrape 	I must be undraping
you must be undraping
he must be undraping
we must be undraping
you must be undraping
they must be undraping	I must have undraped
you must have undraped
he must have undraped
we must have undraped
you must have undraped
they must have undraped	I must have been undraping
you must have been undraping
he must have been undraping
we must have been undraping
you must have been undraping
they must have been undraping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't undrape
you mustn't undrape
he mustn't undrape
we mustn't undrape
you mustn't undrape
they mustn't undrape 	I mustn't be undraping
you mustn't be undraping
he mustn't be undraping
we mustn't be undraping
you mustn't be undraping
they mustn't be undraping	I mustn't have undraped
you mustn't have undraped
he mustn't have undraped
we mustn't have undraped
you mustn't have undraped
they mustn't have undraped	I mustn't have been undraping
you mustn't have been undraping
he mustn't have been undraping
we mustn't have been undraping
you mustn't have been undraping
they mustn't have been undraping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I undrape?
must you undrape?
must he undrape?
must we undrape?
must you undrape?
must they undrape? 	must I be undraping?
must you be undraping?
must he be undraping?
must we be undraping?
must you be undraping?
must they be undraping? 	must I have undraped?
must you have undraped?
must he have undraped?
must we have undraped?
must you have undraped?
must they have undraped? 	must I have been undraping?
must you have been undraping?
must he have been undraping?
must we have been undraping?
must you have been undraping?
must they have been undraping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I undrape?
mustn't you undrape?
mustn't he undrape?
mustn't we undrape?
mustn't you undrape?
mustn't they undrape? 	mustn't I be undraping?
mustn't you be undraping?
mustn't he be undraping?
mustn't we be undraping?
mustn't you be undraping?
mustn't they be undraping? 	mustn't I have undraped?
mustn't you have undraped?
mustn't he have undraped?
mustn't we have undraped?
mustn't you have undraped?
mustn't they have undraped? 	mustn't I have been undraping?
mustn't you have been undraping?
mustn't he have been undraping?
mustn't we have been undraping?
mustn't you have been undraping?
mustn't they have been undraping?