must concrete
Regular verb: concrete - concreted- concreted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must concrete
you must concrete
he must concrete
we must concrete
you must concrete
they must concrete 	I must be concreting
you must be concreting
he must be concreting
we must be concreting
you must be concreting
they must be concreting	I must have concreted
you must have concreted
he must have concreted
we must have concreted
you must have concreted
they must have concreted	I must have been concreting
you must have been concreting
he must have been concreting
we must have been concreting
you must have been concreting
they must have been concreting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not concrete
you must not concrete
he must not concrete
we must not concrete
you must not concrete
they must not concrete 	I must not be concreting
you must not be concreting
he must not be concreting
we must not be concreting
you must not be concreting
they must not be concreting	I must not have concreted
you must not have concreted
he must not have concreted
we must not have concreted
you must not have concreted
they must not have concreted	I must not have been concreting
you must not have been concreting
he must not have been concreting
we must not have been concreting
you must not have been concreting
they must not have been concreting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I concrete?
must you concrete?
must he concrete?
must we concrete?
must you concrete?
must they concrete? 	must I be concreting?
must you be concreting?
must he be concreting?
must we be concreting?
must you be concreting?
must they be concreting? 	must I have concreted?
must you have concreted?
must he have concreted?
must we have concreted?
must you have concreted?
must they have concreted? 	must I have been concreting?
must you have been concreting?
must he have been concreting?
must we have been concreting?
must you have been concreting?
must they have been concreting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not concrete?
must you not concrete?
must he not concrete?
must we not concrete?
must you not concrete?
must they not concrete? 	must I not be concreting?
must you not be concreting?
must he not be concreting?
must we not be concreting?
must you not be concreting?
must they not be concreting? 	must I not have concreted?
must you not have concreted?
must he not have concreted?
must we not have concreted?
must you not have concreted?
must they not have concreted? 	must I not have been concreting?
must you not have been concreting?
must he not have been concreting?
must we not have been concreting?
must you not have been concreting?
must they not have been concreting?