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