I could imply you could imply he could imply we could imply you could imply they could imply
V-ing form
I could be implying you could be implying he could be implying we could be implying you could be implying they could be implying
Perfect
I could have implied you could have implied he could have implied we could have implied you could have implied they could have implied
V-ing perfect
I could have been implying you could have been implying he could have been implying we could have been implying you could have been implying they could have been implying
Negation
Simple form
I couldn't imply you couldn't imply he couldn't imply we couldn't imply you couldn't imply they couldn't imply
V-ing form
I couldn't be implying you couldn't be implying he couldn't be implying we couldn't be implying you couldn't be implying they couldn't be implying
Perfect
I couldn't have implied you couldn't have implied he couldn't have implied we couldn't have implied you couldn't have implied they couldn't have implied
V-ing perfect
I couldn't have been implying you couldn't have been implying he couldn't have been implying we couldn't have been implying you couldn't have been implying they couldn't have been implying
Interrogative form
Simple form
could I imply? could you imply? could he imply? could we imply? could you imply? could they imply?
V-ing form
could I be implying? could you be implying? could he be implying? could we be implying? could you be implying? could they be implying?
Perfect
could I have implied? could you have implied? could he have implied? could we have implied? could you have implied? could they have implied?
V-ing perfect
could I have been implying? could you have been implying? could he have been implying? could we have been implying? could you have been implying? could they have been implying?
Interro-negative form
Simple form
couldn't I imply? couldn't you imply? couldn't he imply? couldn't we imply? couldn't you imply? couldn't they imply?
V-ing form
couldn't I be implying? couldn't you be implying? couldn't he be implying? couldn't we be implying? couldn't you be implying? couldn't they be implying?
Perfect
couldn't I have implied? couldn't you have implied? couldn't he have implied? couldn't we have implied? couldn't you have implied? couldn't they have implied?
V-ing perfect
couldn't I have been implying? couldn't you have been implying? couldn't he have been implying? couldn't we have been implying? couldn't you have been implying? couldn't they have been implying?