must uncross
Verbo regular: uncross - uncrossed- uncrossed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must uncross
you must uncross
he must uncross
we must uncross
you must uncross
they must uncross 	I must be uncrossing
you must be uncrossing
he must be uncrossing
we must be uncrossing
you must be uncrossing
they must be uncrossing	I must have uncrossed
you must have uncrossed
he must have uncrossed
we must have uncrossed
you must have uncrossed
they must have uncrossed	I must have been uncrossing
you must have been uncrossing
he must have been uncrossing
we must have been uncrossing
you must have been uncrossing
they must have been uncrossing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not uncross
you must not uncross
he must not uncross
we must not uncross
you must not uncross
they must not uncross 	I must not be uncrossing
you must not be uncrossing
he must not be uncrossing
we must not be uncrossing
you must not be uncrossing
they must not be uncrossing	I must not have uncrossed
you must not have uncrossed
he must not have uncrossed
we must not have uncrossed
you must not have uncrossed
they must not have uncrossed	I must not have been uncrossing
you must not have been uncrossing
he must not have been uncrossing
we must not have been uncrossing
you must not have been uncrossing
they must not have been uncrossing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I uncross?
must you uncross?
must he uncross?
must we uncross?
must you uncross?
must they uncross? 	must I be uncrossing?
must you be uncrossing?
must he be uncrossing?
must we be uncrossing?
must you be uncrossing?
must they be uncrossing? 	must I have uncrossed?
must you have uncrossed?
must he have uncrossed?
must we have uncrossed?
must you have uncrossed?
must they have uncrossed? 	must I have been uncrossing?
must you have been uncrossing?
must he have been uncrossing?
must we have been uncrossing?
must you have been uncrossing?
must they have been uncrossing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not uncross?
must you not uncross?
must he not uncross?
must we not uncross?
must you not uncross?
must they not uncross? 	must I not be uncrossing?
must you not be uncrossing?
must he not be uncrossing?
must we not be uncrossing?
must you not be uncrossing?
must they not be uncrossing? 	must I not have uncrossed?
must you not have uncrossed?
must he not have uncrossed?
must we not have uncrossed?
must you not have uncrossed?
must they not have uncrossed? 	must I not have been uncrossing?
must you not have been uncrossing?
must he not have been uncrossing?
must we not have been uncrossing?
must you not have been uncrossing?
must they not have been uncrossing?