must terraform
Regular verb: terraform - terraformed- terraformed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must terraform
you must terraform
he must terraform
we must terraform
you must terraform
they must terraform 	I must be terraforming
you must be terraforming
he must be terraforming
we must be terraforming
you must be terraforming
they must be terraforming	I must have terraformed
you must have terraformed
he must have terraformed
we must have terraformed
you must have terraformed
they must have terraformed	I must have been terraforming
you must have been terraforming
he must have been terraforming
we must have been terraforming
you must have been terraforming
they must have been terraforming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not terraform
you must not terraform
he must not terraform
we must not terraform
you must not terraform
they must not terraform 	I must not be terraforming
you must not be terraforming
he must not be terraforming
we must not be terraforming
you must not be terraforming
they must not be terraforming	I must not have terraformed
you must not have terraformed
he must not have terraformed
we must not have terraformed
you must not have terraformed
they must not have terraformed	I must not have been terraforming
you must not have been terraforming
he must not have been terraforming
we must not have been terraforming
you must not have been terraforming
they must not have been terraforming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I terraform?
must you terraform?
must he terraform?
must we terraform?
must you terraform?
must they terraform? 	must I be terraforming?
must you be terraforming?
must he be terraforming?
must we be terraforming?
must you be terraforming?
must they be terraforming? 	must I have terraformed?
must you have terraformed?
must he have terraformed?
must we have terraformed?
must you have terraformed?
must they have terraformed? 	must I have been terraforming?
must you have been terraforming?
must he have been terraforming?
must we have been terraforming?
must you have been terraforming?
must they have been terraforming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not terraform?
must you not terraform?
must he not terraform?
must we not terraform?
must you not terraform?
must they not terraform? 	must I not be terraforming?
must you not be terraforming?
must he not be terraforming?
must we not be terraforming?
must you not be terraforming?
must they not be terraforming? 	must I not have terraformed?
must you not have terraformed?
must he not have terraformed?
must we not have terraformed?
must you not have terraformed?
must they not have terraformed? 	must I not have been terraforming?
must you not have been terraforming?
must he not have been terraforming?
must we not have been terraforming?
must you not have been terraforming?
must they not have been terraforming?