must cross-post
Regular verb: cross-post - cross-posted- cross-posted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must cross-post
you must cross-post
she must cross-post
we must cross-post
you must cross-post
they must cross-post 	I must be cross-posting
you must be cross-posting
she must be cross-posting
we must be cross-posting
you must be cross-posting
they must be cross-posting	I must have cross-posted
you must have cross-posted
she must have cross-posted
we must have cross-posted
you must have cross-posted
they must have cross-posted	I must have been cross-posting
you must have been cross-posting
she must have been cross-posting
we must have been cross-posting
you must have been cross-posting
they must have been cross-posting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't cross-post
you mustn't cross-post
she mustn't cross-post
we mustn't cross-post
you mustn't cross-post
they mustn't cross-post 	I mustn't be cross-posting
you mustn't be cross-posting
she mustn't be cross-posting
we mustn't be cross-posting
you mustn't be cross-posting
they mustn't be cross-posting	I mustn't have cross-posted
you mustn't have cross-posted
she mustn't have cross-posted
we mustn't have cross-posted
you mustn't have cross-posted
they mustn't have cross-posted	I mustn't have been cross-posting
you mustn't have been cross-posting
she mustn't have been cross-posting
we mustn't have been cross-posting
you mustn't have been cross-posting
they mustn't have been cross-posting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I cross-post?
must you cross-post?
must she cross-post?
must we cross-post?
must you cross-post?
must they cross-post? 	must I be cross-posting?
must you be cross-posting?
must she be cross-posting?
must we be cross-posting?
must you be cross-posting?
must they be cross-posting? 	must I have cross-posted?
must you have cross-posted?
must she have cross-posted?
must we have cross-posted?
must you have cross-posted?
must they have cross-posted? 	must I have been cross-posting?
must you have been cross-posting?
must she have been cross-posting?
must we have been cross-posting?
must you have been cross-posting?
must they have been cross-posting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I cross-post?
mustn't you cross-post?
mustn't she cross-post?
mustn't we cross-post?
mustn't you cross-post?
mustn't they cross-post? 	mustn't I be cross-posting?
mustn't you be cross-posting?
mustn't she be cross-posting?
mustn't we be cross-posting?
mustn't you be cross-posting?
mustn't they be cross-posting? 	mustn't I have cross-posted?
mustn't you have cross-posted?
mustn't she have cross-posted?
mustn't we have cross-posted?
mustn't you have cross-posted?
mustn't they have cross-posted? 	mustn't I have been cross-posting?
mustn't you have been cross-posting?
mustn't she have been cross-posting?
mustn't we have been cross-posting?
mustn't you have been cross-posting?
mustn't they have been cross-posting?