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