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 couldn't terrify you couldn't terrify he couldn't terrify we couldn't terrify you couldn't terrify they couldn't terrify
V-ing form
I couldn't be terrifying you couldn't be terrifying he couldn't be terrifying we couldn't be terrifying you couldn't be terrifying they couldn't be terrifying
Perfect
I couldn't have terrified you couldn't have terrified he couldn't have terrified we couldn't have terrified you couldn't have terrified they couldn't have terrified
V-ing perfect
I couldn't have been terrifying you couldn't have been terrifying he couldn't have been terrifying we couldn't have been terrifying you couldn't have been terrifying they couldn't 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
couldn't I terrify? couldn't you terrify? couldn't he terrify? couldn't we terrify? couldn't you terrify? couldn't they terrify?
V-ing form
couldn't I be terrifying? couldn't you be terrifying? couldn't he be terrifying? couldn't we be terrifying? couldn't you be terrifying? couldn't they be terrifying?
Perfect
couldn't I have terrified? couldn't you have terrified? couldn't he have terrified? couldn't we have terrified? couldn't you have terrified? couldn't they have terrified?
V-ing perfect
couldn't I have been terrifying? couldn't you have been terrifying? couldn't he have been terrifying? couldn't we have been terrifying? couldn't you have been terrifying? couldn't they have been terrifying?