can characterize
Regular verb: characterize - characterized- characterized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can characterize
you can characterize
he can characterize
we can characterize
you can characterize
they can characterize 	I can be characterizing
you can be characterizing
he can be characterizing
we can be characterizing
you can be characterizing
they can be characterizing	I can have characterized
you can have characterized
he can have characterized
we can have characterized
you can have characterized
they can have characterized	I can have been characterizing
you can have been characterizing
he can have been characterizing
we can have been characterizing
you can have been characterizing
they can have been characterizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot characterize
you cannot characterize
he cannot characterize
we cannot characterize
you cannot characterize
they cannot characterize 	I cannot be characterizing
you cannot be characterizing
he cannot be characterizing
we cannot be characterizing
you cannot be characterizing
they cannot be characterizing	I cannot have characterized
you cannot have characterized
he cannot have characterized
we cannot have characterized
you cannot have characterized
they cannot have characterized	I cannot have been characterizing
you cannot have been characterizing
he cannot have been characterizing
we cannot have been characterizing
you cannot have been characterizing
they cannot have been characterizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I characterize?
can you characterize?
can he characterize?
can we characterize?
can you characterize?
can they characterize? 	can I be characterizing?
can you be characterizing?
can he be characterizing?
can we be characterizing?
can you be characterizing?
can they be characterizing? 	can I have characterized?
can you have characterized?
can he have characterized?
can we have characterized?
can you have characterized?
can they have characterized? 	can I have been characterizing?
can you have been characterizing?
can he have been characterizing?
can we have been characterizing?
can you have been characterizing?
can they have been characterizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not characterize?
can you not characterize?
can he not characterize?
can we not characterize?
can you not characterize?
can they not characterize? 	can I not be characterizing?
can you not be characterizing?
can he not be characterizing?
can we not be characterizing?
can you not be characterizing?
can they not be characterizing? 	can I not have characterized?
can you not have characterized?
can he not have characterized?
can we not have characterized?
can you not have characterized?
can they not have characterized? 	can I not have been characterizing?
can you not have been characterizing?
can he not have been characterizing?
can we not have been characterizing?
can you not have been characterizing?
can they not have been characterizing?