must cross-section
Verbo regular: cross-section - cross-sectioned- cross-sectioned

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must cross-section
you must cross-section
she must cross-section
we must cross-section
you must cross-section
they must cross-section 	I must be cross-sectioning
you must be cross-sectioning
she must be cross-sectioning
we must be cross-sectioning
you must be cross-sectioning
they must be cross-sectioning	I must have cross-sectioned
you must have cross-sectioned
she must have cross-sectioned
we must have cross-sectioned
you must have cross-sectioned
they must have cross-sectioned	I must have been cross-sectioning
you must have been cross-sectioning
she must have been cross-sectioning
we must have been cross-sectioning
you must have been cross-sectioning
they must have been cross-sectioning	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not cross-section
you must not cross-section
she must not cross-section
we must not cross-section
you must not cross-section
they must not cross-section 	I must not be cross-sectioning
you must not be cross-sectioning
she must not be cross-sectioning
we must not be cross-sectioning
you must not be cross-sectioning
they must not be cross-sectioning	I must not have cross-sectioned
you must not have cross-sectioned
she must not have cross-sectioned
we must not have cross-sectioned
you must not have cross-sectioned
they must not have cross-sectioned	I must not have been cross-sectioning
you must not have been cross-sectioning
she must not have been cross-sectioning
we must not have been cross-sectioning
you must not have been cross-sectioning
they must not have been cross-sectioning	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I cross-section?
must you cross-section?
must she cross-section?
must we cross-section?
must you cross-section?
must they cross-section? 	must I be cross-sectioning?
must you be cross-sectioning?
must she be cross-sectioning?
must we be cross-sectioning?
must you be cross-sectioning?
must they be cross-sectioning? 	must I have cross-sectioned?
must you have cross-sectioned?
must she have cross-sectioned?
must we have cross-sectioned?
must you have cross-sectioned?
must they have cross-sectioned? 	must I have been cross-sectioning?
must you have been cross-sectioning?
must she have been cross-sectioning?
must we have been cross-sectioning?
must you have been cross-sectioning?
must they have been cross-sectioning? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not cross-section?
must you not cross-section?
must she not cross-section?
must we not cross-section?
must you not cross-section?
must they not cross-section? 	must I not be cross-sectioning?
must you not be cross-sectioning?
must she not be cross-sectioning?
must we not be cross-sectioning?
must you not be cross-sectioning?
must they not be cross-sectioning? 	must I not have cross-sectioned?
must you not have cross-sectioned?
must she not have cross-sectioned?
must we not have cross-sectioned?
must you not have cross-sectioned?
must they not have cross-sectioned? 	must I not have been cross-sectioning?
must you not have been cross-sectioning?
must she not have been cross-sectioning?
must we not have been cross-sectioning?
must you not have been cross-sectioning?
must they not have been cross-sectioning?