must cross-reference
Regular verb: cross-reference - cross-referenced- cross-referenced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must cross-reference
you must cross-reference
he must cross-reference
we must cross-reference
you must cross-reference
they must cross-reference 	I must be cross-referencing
you must be cross-referencing
he must be cross-referencing
we must be cross-referencing
you must be cross-referencing
they must be cross-referencing	I must have cross-referenced
you must have cross-referenced
he must have cross-referenced
we must have cross-referenced
you must have cross-referenced
they must have cross-referenced	I must have been cross-referencing
you must have been cross-referencing
he must have been cross-referencing
we must have been cross-referencing
you must have been cross-referencing
they must have been cross-referencing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't cross-reference
you mustn't cross-reference
he mustn't cross-reference
we mustn't cross-reference
you mustn't cross-reference
they mustn't cross-reference 	I mustn't be cross-referencing
you mustn't be cross-referencing
he mustn't be cross-referencing
we mustn't be cross-referencing
you mustn't be cross-referencing
they mustn't be cross-referencing	I mustn't have cross-referenced
you mustn't have cross-referenced
he mustn't have cross-referenced
we mustn't have cross-referenced
you mustn't have cross-referenced
they mustn't have cross-referenced	I mustn't have been cross-referencing
you mustn't have been cross-referencing
he mustn't have been cross-referencing
we mustn't have been cross-referencing
you mustn't have been cross-referencing
they mustn't have been cross-referencing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I cross-reference?
must you cross-reference?
must he cross-reference?
must we cross-reference?
must you cross-reference?
must they cross-reference? 	must I be cross-referencing?
must you be cross-referencing?
must he be cross-referencing?
must we be cross-referencing?
must you be cross-referencing?
must they be cross-referencing? 	must I have cross-referenced?
must you have cross-referenced?
must he have cross-referenced?
must we have cross-referenced?
must you have cross-referenced?
must they have cross-referenced? 	must I have been cross-referencing?
must you have been cross-referencing?
must he have been cross-referencing?
must we have been cross-referencing?
must you have been cross-referencing?
must they have been cross-referencing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I cross-reference?
mustn't you cross-reference?
mustn't he cross-reference?
mustn't we cross-reference?
mustn't you cross-reference?
mustn't they cross-reference? 	mustn't I be cross-referencing?
mustn't you be cross-referencing?
mustn't he be cross-referencing?
mustn't we be cross-referencing?
mustn't you be cross-referencing?
mustn't they be cross-referencing? 	mustn't I have cross-referenced?
mustn't you have cross-referenced?
mustn't he have cross-referenced?
mustn't we have cross-referenced?
mustn't you have cross-referenced?
mustn't they have cross-referenced? 	mustn't I have been cross-referencing?
mustn't you have been cross-referencing?
mustn't he have been cross-referencing?
mustn't we have been cross-referencing?
mustn't you have been cross-referencing?
mustn't they have been cross-referencing?