I could terrify you could terrify he could terrify we could terrify you could terrify they could terrify
V-ing form
I could be terrifying you could be terrifying he could be terrifying we could be terrifying you could be terrifying they could be terrifying
Perfect
I could have terrified you could have terrified he could have terrified we could have terrified you could have terrified they could have terrified
V-ing perfect
I could have been terrifying you could have been terrifying he could have been terrifying we could have been terrifying you could have been terrifying they could have been terrifying
Negation
Simple form
I could not terrify you could not terrify he could not terrify we could not terrify you could not terrify they could not terrify
V-ing form
I could not be terrifying you could not be terrifying he could not be terrifying we could not be terrifying you could not be terrifying they could not be terrifying
Perfect
I could not have terrified you could not have terrified he could not have terrified we could not have terrified you could not have terrified they could not have terrified
V-ing perfect
I could not have been terrifying you could not have been terrifying he could not have been terrifying we could not have been terrifying you could not have been terrifying they could not have been terrifying
Interrogative form
Simple form
could I terrify? could you terrify? could he terrify? could we terrify? could you terrify? could they terrify?
V-ing form
could I be terrifying? could you be terrifying? could he be terrifying? could we be terrifying? could you be terrifying? could they be terrifying?
Perfect
could I have terrified? could you have terrified? could he have terrified? could we have terrified? could you have terrified? could they have terrified?
V-ing perfect
could I have been terrifying? could you have been terrifying? could he have been terrifying? could we have been terrifying? could you have been terrifying? could they have been terrifying?
Interro-negative form
Simple form
could I not terrify? could you not terrify? could he not terrify? could we not terrify? could you not terrify? could they not terrify?
V-ing form
could I not be terrifying? could you not be terrifying? could he not be terrifying? could we not be terrifying? could you not be terrifying? could they not be terrifying?
Perfect
could I not have terrified? could you not have terrified? could he not have terrified? could we not have terrified? could you not have terrified? could they not have terrified?
V-ing perfect
could I not have been terrifying? could you not have been terrifying? could he not have been terrifying? could we not have been terrifying? could you not have been terrifying? could they not have been terrifying?