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