must countermove
Regular verb: countermove - countermoved- countermoved

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must countermove
you must countermove
he must countermove
we must countermove
you must countermove
they must countermove 	I must be countermoving
you must be countermoving
he must be countermoving
we must be countermoving
you must be countermoving
they must be countermoving	I must have countermoved
you must have countermoved
he must have countermoved
we must have countermoved
you must have countermoved
they must have countermoved	I must have been countermoving
you must have been countermoving
he must have been countermoving
we must have been countermoving
you must have been countermoving
they must have been countermoving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not countermove
you must not countermove
he must not countermove
we must not countermove
you must not countermove
they must not countermove 	I must not be countermoving
you must not be countermoving
he must not be countermoving
we must not be countermoving
you must not be countermoving
they must not be countermoving	I must not have countermoved
you must not have countermoved
he must not have countermoved
we must not have countermoved
you must not have countermoved
they must not have countermoved	I must not have been countermoving
you must not have been countermoving
he must not have been countermoving
we must not have been countermoving
you must not have been countermoving
they must not have been countermoving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I countermove?
must you countermove?
must he countermove?
must we countermove?
must you countermove?
must they countermove? 	must I be countermoving?
must you be countermoving?
must he be countermoving?
must we be countermoving?
must you be countermoving?
must they be countermoving? 	must I have countermoved?
must you have countermoved?
must he have countermoved?
must we have countermoved?
must you have countermoved?
must they have countermoved? 	must I have been countermoving?
must you have been countermoving?
must he have been countermoving?
must we have been countermoving?
must you have been countermoving?
must they have been countermoving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not countermove?
must you not countermove?
must he not countermove?
must we not countermove?
must you not countermove?
must they not countermove? 	must I not be countermoving?
must you not be countermoving?
must he not be countermoving?
must we not be countermoving?
must you not be countermoving?
must they not be countermoving? 	must I not have countermoved?
must you not have countermoved?
must he not have countermoved?
must we not have countermoved?
must you not have countermoved?
must they not have countermoved? 	must I not have been countermoving?
must you not have been countermoving?
must he not have been countermoving?
must we not have been countermoving?
must you not have been countermoving?
must they not have been countermoving?