English verb conjugation
COULD UNCHAIR

Regular verb: unchair - unchaired - unchaired

Affirmation

Simple form	V-ing form
I could unchair you could unchair he could unchair we could unchair you could unchair they could unchair	I could be unchairing you could be unchairing he could be unchairing we could be unchairing you could be unchairing they could be unchairing
Perfect	V-ing perfect
I could have unchaired you could have unchaired he could have unchaired we could have unchaired you could have unchaired they could have unchaired	I could have been unchairing you could have been unchairing he could have been unchairing we could have been unchairing you could have been unchairing they could have been unchairing

Negation

Simple form	V-ing form
I couldn't unchair you couldn't unchair he couldn't unchair we couldn't unchair you couldn't unchair they couldn't unchair	I couldn't be unchairing you couldn't be unchairing he couldn't be unchairing we couldn't be unchairing you couldn't be unchairing they couldn't be unchairing
Perfect	V-ing perfect
I couldn't have unchaired you couldn't have unchaired he couldn't have unchaired we couldn't have unchaired you couldn't have unchaired they couldn't have unchaired	I couldn't have been unchairing you couldn't have been unchairing he couldn't have been unchairing we couldn't have been unchairing you couldn't have been unchairing they couldn't have been unchairing

Interrogative form

Simple form	V-ing form
could I unchair? could you unchair? could he unchair? could we unchair? could you unchair? could they unchair?	could I be unchairing? could you be unchairing? could he be unchairing? could we be unchairing? could you be unchairing? could they be unchairing?
Perfect	V-ing perfect
could I have unchaired? could you have unchaired? could he have unchaired? could we have unchaired? could you have unchaired? could they have unchaired?	could I have been unchairing? could you have been unchairing? could he have been unchairing? could we have been unchairing? could you have been unchairing? could they have been unchairing?

Interro-negative form

Simple form	V-ing form
couldn't I unchair? couldn't you unchair? couldn't he unchair? couldn't we unchair? couldn't you unchair? couldn't they unchair?	couldn't I be unchairing? couldn't you be unchairing? couldn't he be unchairing? couldn't we be unchairing? couldn't you be unchairing? couldn't they be unchairing?
Perfect	V-ing perfect
couldn't I have unchaired? couldn't you have unchaired? couldn't he have unchaired? couldn't we have unchaired? couldn't you have unchaired? couldn't they have unchaired?	couldn't I have been unchairing? couldn't you have been unchairing? couldn't he have been unchairing? couldn't we have been unchairing? couldn't you have been unchairing? couldn't they have been unchairing?