can concrete
Regular verb: concrete - concreted- concreted

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

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

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

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