must calendar
Regular verb: calendar - calendared- calendared

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must calendar
you must calendar
he must calendar
we must calendar
you must calendar
they must calendar 	I must be calendaring
you must be calendaring
he must be calendaring
we must be calendaring
you must be calendaring
they must be calendaring	I must have calendared
you must have calendared
he must have calendared
we must have calendared
you must have calendared
they must have calendared	I must have been calendaring
you must have been calendaring
he must have been calendaring
we must have been calendaring
you must have been calendaring
they must have been calendaring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not calendar
you must not calendar
he must not calendar
we must not calendar
you must not calendar
they must not calendar 	I must not be calendaring
you must not be calendaring
he must not be calendaring
we must not be calendaring
you must not be calendaring
they must not be calendaring	I must not have calendared
you must not have calendared
he must not have calendared
we must not have calendared
you must not have calendared
they must not have calendared	I must not have been calendaring
you must not have been calendaring
he must not have been calendaring
we must not have been calendaring
you must not have been calendaring
they must not have been calendaring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I calendar?
must you calendar?
must he calendar?
must we calendar?
must you calendar?
must they calendar? 	must I be calendaring?
must you be calendaring?
must he be calendaring?
must we be calendaring?
must you be calendaring?
must they be calendaring? 	must I have calendared?
must you have calendared?
must he have calendared?
must we have calendared?
must you have calendared?
must they have calendared? 	must I have been calendaring?
must you have been calendaring?
must he have been calendaring?
must we have been calendaring?
must you have been calendaring?
must they have been calendaring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not calendar?
must you not calendar?
must he not calendar?
must we not calendar?
must you not calendar?
must they not calendar? 	must I not be calendaring?
must you not be calendaring?
must he not be calendaring?
must we not be calendaring?
must you not be calendaring?
must they not be calendaring? 	must I not have calendared?
must you not have calendared?
must he not have calendared?
must we not have calendared?
must you not have calendared?
must they not have calendared? 	must I not have been calendaring?
must you not have been calendaring?
must he not have been calendaring?
must we not have been calendaring?
must you not have been calendaring?
must they not have been calendaring?