must overdiscount
Regular verb: overdiscount - overdiscounted- overdiscounted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must overdiscount
you must overdiscount
he must overdiscount
we must overdiscount
you must overdiscount
they must overdiscount 	I must be overdiscounting
you must be overdiscounting
he must be overdiscounting
we must be overdiscounting
you must be overdiscounting
they must be overdiscounting	I must have overdiscounted
you must have overdiscounted
he must have overdiscounted
we must have overdiscounted
you must have overdiscounted
they must have overdiscounted	I must have been overdiscounting
you must have been overdiscounting
he must have been overdiscounting
we must have been overdiscounting
you must have been overdiscounting
they must have been overdiscounting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not overdiscount
you must not overdiscount
he must not overdiscount
we must not overdiscount
you must not overdiscount
they must not overdiscount 	I must not be overdiscounting
you must not be overdiscounting
he must not be overdiscounting
we must not be overdiscounting
you must not be overdiscounting
they must not be overdiscounting	I must not have overdiscounted
you must not have overdiscounted
he must not have overdiscounted
we must not have overdiscounted
you must not have overdiscounted
they must not have overdiscounted	I must not have been overdiscounting
you must not have been overdiscounting
he must not have been overdiscounting
we must not have been overdiscounting
you must not have been overdiscounting
they must not have been overdiscounting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I overdiscount?
must you overdiscount?
must he overdiscount?
must we overdiscount?
must you overdiscount?
must they overdiscount? 	must I be overdiscounting?
must you be overdiscounting?
must he be overdiscounting?
must we be overdiscounting?
must you be overdiscounting?
must they be overdiscounting? 	must I have overdiscounted?
must you have overdiscounted?
must he have overdiscounted?
must we have overdiscounted?
must you have overdiscounted?
must they have overdiscounted? 	must I have been overdiscounting?
must you have been overdiscounting?
must he have been overdiscounting?
must we have been overdiscounting?
must you have been overdiscounting?
must they have been overdiscounting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not overdiscount?
must you not overdiscount?
must he not overdiscount?
must we not overdiscount?
must you not overdiscount?
must they not overdiscount? 	must I not be overdiscounting?
must you not be overdiscounting?
must he not be overdiscounting?
must we not be overdiscounting?
must you not be overdiscounting?
must they not be overdiscounting? 	must I not have overdiscounted?
must you not have overdiscounted?
must he not have overdiscounted?
must we not have overdiscounted?
must you not have overdiscounted?
must they not have overdiscounted? 	must I not have been overdiscounting?
must you not have been overdiscounting?
must he not have been overdiscounting?
must we not have been overdiscounting?
must you not have been overdiscounting?
must they not have been overdiscounting?