must oink
Regular verb: oink - oinked- oinked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must oink
you must oink
he must oink
we must oink
you must oink
they must oink 	I must be oinking
you must be oinking
he must be oinking
we must be oinking
you must be oinking
they must be oinking	I must have oinked
you must have oinked
he must have oinked
we must have oinked
you must have oinked
they must have oinked	I must have been oinking
you must have been oinking
he must have been oinking
we must have been oinking
you must have been oinking
they must have been oinking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not oink
you must not oink
he must not oink
we must not oink
you must not oink
they must not oink 	I must not be oinking
you must not be oinking
he must not be oinking
we must not be oinking
you must not be oinking
they must not be oinking	I must not have oinked
you must not have oinked
he must not have oinked
we must not have oinked
you must not have oinked
they must not have oinked	I must not have been oinking
you must not have been oinking
he must not have been oinking
we must not have been oinking
you must not have been oinking
they must not have been oinking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I oink?
must you oink?
must he oink?
must we oink?
must you oink?
must they oink? 	must I be oinking?
must you be oinking?
must he be oinking?
must we be oinking?
must you be oinking?
must they be oinking? 	must I have oinked?
must you have oinked?
must he have oinked?
must we have oinked?
must you have oinked?
must they have oinked? 	must I have been oinking?
must you have been oinking?
must he have been oinking?
must we have been oinking?
must you have been oinking?
must they have been oinking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not oink?
must you not oink?
must he not oink?
must we not oink?
must you not oink?
must they not oink? 	must I not be oinking?
must you not be oinking?
must he not be oinking?
must we not be oinking?
must you not be oinking?
must they not be oinking? 	must I not have oinked?
must you not have oinked?
must he not have oinked?
must we not have oinked?
must you not have oinked?
must they not have oinked? 	must I not have been oinking?
must you not have been oinking?
must he not have been oinking?
must we not have been oinking?
must you not have been oinking?
must they not have been oinking?