can tango
Regular verb: tango - tangoed- tangoed

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

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

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

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