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