I could hinder you could hinder he could hinder we could hinder you could hinder they could hinder
V-ing form
I could be hindering you could be hindering he could be hindering we could be hindering you could be hindering they could be hindering
Perfect
I could have hindered you could have hindered he could have hindered we could have hindered you could have hindered they could have hindered
V-ing perfect
I could have been hindering you could have been hindering he could have been hindering we could have been hindering you could have been hindering they could have been hindering
Negation
Simple form
I could not hinder you could not hinder he could not hinder we could not hinder you could not hinder they could not hinder
V-ing form
I could not be hindering you could not be hindering he could not be hindering we could not be hindering you could not be hindering they could not be hindering
Perfect
I could not have hindered you could not have hindered he could not have hindered we could not have hindered you could not have hindered they could not have hindered
V-ing perfect
I could not have been hindering you could not have been hindering he could not have been hindering we could not have been hindering you could not have been hindering they could not have been hindering
Interrogative form
Simple form
could I hinder? could you hinder? could he hinder? could we hinder? could you hinder? could they hinder?
V-ing form
could I be hindering? could you be hindering? could he be hindering? could we be hindering? could you be hindering? could they be hindering?
Perfect
could I have hindered? could you have hindered? could he have hindered? could we have hindered? could you have hindered? could they have hindered?
V-ing perfect
could I have been hindering? could you have been hindering? could he have been hindering? could we have been hindering? could you have been hindering? could they have been hindering?
Interro-negative form
Simple form
could I not hinder? could you not hinder? could he not hinder? could we not hinder? could you not hinder? could they not hinder?
V-ing form
could I not be hindering? could you not be hindering? could he not be hindering? could we not be hindering? could you not be hindering? could they not be hindering?
Perfect
could I not have hindered? could you not have hindered? could he not have hindered? could we not have hindered? could you not have hindered? could they not have hindered?
V-ing perfect
could I not have been hindering? could you not have been hindering? could he not have been hindering? could we not have been hindering? could you not have been hindering? could they not have been hindering?