I could strangulate you could strangulate she could strangulate we could strangulate you could strangulate they could strangulate
V-ing form
I could be strangulating you could be strangulating she could be strangulating we could be strangulating you could be strangulating they could be strangulating
Perfect
I could have strangulated you could have strangulated she could have strangulated we could have strangulated you could have strangulated they could have strangulated
V-ing perfect
I could have been strangulating you could have been strangulating she could have been strangulating we could have been strangulating you could have been strangulating they could have been strangulating
Negation
Simple form
I could not strangulate you could not strangulate she could not strangulate we could not strangulate you could not strangulate they could not strangulate
V-ing form
I could not be strangulating you could not be strangulating she could not be strangulating we could not be strangulating you could not be strangulating they could not be strangulating
Perfect
I could not have strangulated you could not have strangulated she could not have strangulated we could not have strangulated you could not have strangulated they could not have strangulated
V-ing perfect
I could not have been strangulating you could not have been strangulating she could not have been strangulating we could not have been strangulating you could not have been strangulating they could not have been strangulating
Interrogative form
Simple form
could I strangulate? could you strangulate? could she strangulate? could we strangulate? could you strangulate? could they strangulate?
V-ing form
could I be strangulating? could you be strangulating? could she be strangulating? could we be strangulating? could you be strangulating? could they be strangulating?
Perfect
could I have strangulated? could you have strangulated? could she have strangulated? could we have strangulated? could you have strangulated? could they have strangulated?
V-ing perfect
could I have been strangulating? could you have been strangulating? could she have been strangulating? could we have been strangulating? could you have been strangulating? could they have been strangulating?
Interro-negative form
Simple form
could I not strangulate? could you not strangulate? could she not strangulate? could we not strangulate? could you not strangulate? could they not strangulate?
V-ing form
could I not be strangulating? could you not be strangulating? could she not be strangulating? could we not be strangulating? could you not be strangulating? could they not be strangulating?
Perfect
could I not have strangulated? could you not have strangulated? could she not have strangulated? could we not have strangulated? could you not have strangulated? could they not have strangulated?
V-ing perfect
could I not have been strangulating? could you not have been strangulating? could she not have been strangulating? could we not have been strangulating? could you not have been strangulating? could they not have been strangulating?