could masticate
Regular verb: masticate - masticated- masticated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could masticate
you could masticate
she could masticate
we could masticate
you could masticate
they could masticate 	I could be masticating
you could be masticating
she could be masticating
we could be masticating
you could be masticating
they could be masticating	I could have masticated
you could have masticated
she could have masticated
we could have masticated
you could have masticated
they could have masticated	I could have been masticating
you could have been masticating
she could have been masticating
we could have been masticating
you could have been masticating
they could have been masticating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not masticate
you could not masticate
she could not masticate
we could not masticate
you could not masticate
they could not masticate 	I could not be masticating
you could not be masticating
she could not be masticating
we could not be masticating
you could not be masticating
they could not be masticating	I could not have masticated
you could not have masticated
she could not have masticated
we could not have masticated
you could not have masticated
they could not have masticated	I could not have been masticating
you could not have been masticating
she could not have been masticating
we could not have been masticating
you could not have been masticating
they could not have been masticating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I masticate?
could you masticate?
could she masticate?
could we masticate?
could you masticate?
could they masticate? 	could I be masticating?
could you be masticating?
could she be masticating?
could we be masticating?
could you be masticating?
could they be masticating? 	could I have masticated?
could you have masticated?
could she have masticated?
could we have masticated?
could you have masticated?
could they have masticated? 	could I have been masticating?
could you have been masticating?
could she have been masticating?
could we have been masticating?
could you have been masticating?
could they have been masticating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not masticate?
could you not masticate?
could she not masticate?
could we not masticate?
could you not masticate?
could they not masticate? 	could I not be masticating?
could you not be masticating?
could she not be masticating?
could we not be masticating?
could you not be masticating?
could they not be masticating? 	could I not have masticated?
could you not have masticated?
could she not have masticated?
could we not have masticated?
could you not have masticated?
could they not have masticated? 	could I not have been masticating?
could you not have been masticating?
could she not have been masticating?
could we not have been masticating?
could you not have been masticating?
could they not have been masticating?