could chastise
Regular verb: chastise - chastised- chastised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could chastise
you could chastise
she could chastise
we could chastise
you could chastise
they could chastise 	I could be chastising
you could be chastising
she could be chastising
we could be chastising
you could be chastising
they could be chastising	I could have chastised
you could have chastised
she could have chastised
we could have chastised
you could have chastised
they could have chastised	I could have been chastising
you could have been chastising
she could have been chastising
we could have been chastising
you could have been chastising
they could have been chastising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not chastise
you could not chastise
she could not chastise
we could not chastise
you could not chastise
they could not chastise 	I could not be chastising
you could not be chastising
she could not be chastising
we could not be chastising
you could not be chastising
they could not be chastising	I could not have chastised
you could not have chastised
she could not have chastised
we could not have chastised
you could not have chastised
they could not have chastised	I could not have been chastising
you could not have been chastising
she could not have been chastising
we could not have been chastising
you could not have been chastising
they could not have been chastising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I chastise?
could you chastise?
could she chastise?
could we chastise?
could you chastise?
could they chastise? 	could I be chastising?
could you be chastising?
could she be chastising?
could we be chastising?
could you be chastising?
could they be chastising? 	could I have chastised?
could you have chastised?
could she have chastised?
could we have chastised?
could you have chastised?
could they have chastised? 	could I have been chastising?
could you have been chastising?
could she have been chastising?
could we have been chastising?
could you have been chastising?
could they have been chastising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not chastise?
could you not chastise?
could she not chastise?
could we not chastise?
could you not chastise?
could they not chastise? 	could I not be chastising?
could you not be chastising?
could she not be chastising?
could we not be chastising?
could you not be chastising?
could they not be chastising? 	could I not have chastised?
could you not have chastised?
could she not have chastised?
could we not have chastised?
could you not have chastised?
could they not have chastised? 	could I not have been chastising?
could you not have been chastising?
could she not have been chastising?
could we not have been chastising?
could you not have been chastising?
could they not have been chastising?