must tango
Regular verb: tango - tangoed- tangoed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must tango
you must tango
he must tango
we must tango
you must tango
they must tango 	I must be tangoing
you must be tangoing
he must be tangoing
we must be tangoing
you must be tangoing
they must be tangoing	I must have tangoed
you must have tangoed
he must have tangoed
we must have tangoed
you must have tangoed
they must have tangoed	I must have been tangoing
you must have been tangoing
he must have been tangoing
we must have been tangoing
you must have been tangoing
they must have been tangoing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not tango
you must not tango
he must not tango
we must not tango
you must not tango
they must not tango 	I must not be tangoing
you must not be tangoing
he must not be tangoing
we must not be tangoing
you must not be tangoing
they must not be tangoing	I must not have tangoed
you must not have tangoed
he must not have tangoed
we must not have tangoed
you must not have tangoed
they must not have tangoed	I must not have been tangoing
you must not have been tangoing
he must not have been tangoing
we must not have been tangoing
you must not have been tangoing
they must not have been tangoing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I tango?
must you tango?
must he tango?
must we tango?
must you tango?
must they tango? 	must I be tangoing?
must you be tangoing?
must he be tangoing?
must we be tangoing?
must you be tangoing?
must they be tangoing? 	must I have tangoed?
must you have tangoed?
must he have tangoed?
must we have tangoed?
must you have tangoed?
must they have tangoed? 	must I have been tangoing?
must you have been tangoing?
must he have been tangoing?
must we have been tangoing?
must you have been tangoing?
must they have been tangoing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not tango?
must you not tango?
must he not tango?
must we not tango?
must you not tango?
must they not tango? 	must I not be tangoing?
must you not be tangoing?
must he not be tangoing?
must we not be tangoing?
must you not be tangoing?
must they not be tangoing? 	must I not have tangoed?
must you not have tangoed?
must he not have tangoed?
must we not have tangoed?
must you not have tangoed?
must they not have tangoed? 	must I not have been tangoing?
must you not have been tangoing?
must he not have been tangoing?
must we not have been tangoing?
must you not have been tangoing?
must they not have been tangoing?