English verb conjugation
COULD MANTLE

Regular verb: mantle - mantled - mantled

Affirmation

Simple form	V-ing form
I could mantle you could mantle he could mantle we could mantle you could mantle they could mantle	I could be mantling you could be mantling he could be mantling we could be mantling you could be mantling they could be mantling
Perfect	V-ing perfect
I could have mantled you could have mantled he could have mantled we could have mantled you could have mantled they could have mantled	I could have been mantling you could have been mantling he could have been mantling we could have been mantling you could have been mantling they could have been mantling

Negation

Simple form	V-ing form
I couldn't mantle you couldn't mantle he couldn't mantle we couldn't mantle you couldn't mantle they couldn't mantle	I couldn't be mantling you couldn't be mantling he couldn't be mantling we couldn't be mantling you couldn't be mantling they couldn't be mantling
Perfect	V-ing perfect
I couldn't have mantled you couldn't have mantled he couldn't have mantled we couldn't have mantled you couldn't have mantled they couldn't have mantled	I couldn't have been mantling you couldn't have been mantling he couldn't have been mantling we couldn't have been mantling you couldn't have been mantling they couldn't have been mantling

Interrogative form

Simple form	V-ing form
could I mantle? could you mantle? could he mantle? could we mantle? could you mantle? could they mantle?	could I be mantling? could you be mantling? could he be mantling? could we be mantling? could you be mantling? could they be mantling?
Perfect	V-ing perfect
could I have mantled? could you have mantled? could he have mantled? could we have mantled? could you have mantled? could they have mantled?	could I have been mantling? could you have been mantling? could he have been mantling? could we have been mantling? could you have been mantling? could they have been mantling?

Interro-negative form

Simple form	V-ing form
couldn't I mantle? couldn't you mantle? couldn't he mantle? couldn't we mantle? couldn't you mantle? couldn't they mantle?	couldn't I be mantling? couldn't you be mantling? couldn't he be mantling? couldn't we be mantling? couldn't you be mantling? couldn't they be mantling?
Perfect	V-ing perfect
couldn't I have mantled? couldn't you have mantled? couldn't he have mantled? couldn't we have mantled? couldn't you have mantled? couldn't they have mantled?	couldn't I have been mantling? couldn't you have been mantling? couldn't he have been mantling? couldn't we have been mantling? couldn't you have been mantling? couldn't they have been mantling?