must japan
Regular verb: japan - japaned- japaned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must japan
you must japan
he must japan
we must japan
you must japan
they must japan 	I must be japaning
you must be japaning
he must be japaning
we must be japaning
you must be japaning
they must be japaning	I must have japaned
you must have japaned
he must have japaned
we must have japaned
you must have japaned
they must have japaned	I must have been japaning
you must have been japaning
he must have been japaning
we must have been japaning
you must have been japaning
they must have been japaning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not japan
you must not japan
he must not japan
we must not japan
you must not japan
they must not japan 	I must not be japaning
you must not be japaning
he must not be japaning
we must not be japaning
you must not be japaning
they must not be japaning	I must not have japaned
you must not have japaned
he must not have japaned
we must not have japaned
you must not have japaned
they must not have japaned	I must not have been japaning
you must not have been japaning
he must not have been japaning
we must not have been japaning
you must not have been japaning
they must not have been japaning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I japan?
must you japan?
must he japan?
must we japan?
must you japan?
must they japan? 	must I be japaning?
must you be japaning?
must he be japaning?
must we be japaning?
must you be japaning?
must they be japaning? 	must I have japaned?
must you have japaned?
must he have japaned?
must we have japaned?
must you have japaned?
must they have japaned? 	must I have been japaning?
must you have been japaning?
must he have been japaning?
must we have been japaning?
must you have been japaning?
must they have been japaning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not japan?
must you not japan?
must he not japan?
must we not japan?
must you not japan?
must they not japan? 	must I not be japaning?
must you not be japaning?
must he not be japaning?
must we not be japaning?
must you not be japaning?
must they not be japaning? 	must I not have japaned?
must you not have japaned?
must he not have japaned?
must we not have japaned?
must you not have japaned?
must they not have japaned? 	must I not have been japaning?
must you not have been japaning?
must he not have been japaning?
must we not have been japaning?
must you not have been japaning?
must they not have been japaning?