English verb conjugation
COULD MANIFOLD

Regular verb: manifold - manifolded - manifolded

Affirmation

Simple form	V-ing form
I could manifold you could manifold he could manifold we could manifold you could manifold they could manifold	I could be manifolding you could be manifolding he could be manifolding we could be manifolding you could be manifolding they could be manifolding
Perfect	V-ing perfect
I could have manifolded you could have manifolded he could have manifolded we could have manifolded you could have manifolded they could have manifolded	I could have been manifolding you could have been manifolding he could have been manifolding we could have been manifolding you could have been manifolding they could have been manifolding

Negation

Simple form	V-ing form
I couldn't manifold you couldn't manifold he couldn't manifold we couldn't manifold you couldn't manifold they couldn't manifold	I couldn't be manifolding you couldn't be manifolding he couldn't be manifolding we couldn't be manifolding you couldn't be manifolding they couldn't be manifolding
Perfect	V-ing perfect
I couldn't have manifolded you couldn't have manifolded he couldn't have manifolded we couldn't have manifolded you couldn't have manifolded they couldn't have manifolded	I couldn't have been manifolding you couldn't have been manifolding he couldn't have been manifolding we couldn't have been manifolding you couldn't have been manifolding they couldn't have been manifolding

Interrogative form

Simple form	V-ing form
could I manifold? could you manifold? could he manifold? could we manifold? could you manifold? could they manifold?	could I be manifolding? could you be manifolding? could he be manifolding? could we be manifolding? could you be manifolding? could they be manifolding?
Perfect	V-ing perfect
could I have manifolded? could you have manifolded? could he have manifolded? could we have manifolded? could you have manifolded? could they have manifolded?	could I have been manifolding? could you have been manifolding? could he have been manifolding? could we have been manifolding? could you have been manifolding? could they have been manifolding?

Interro-negative form

Simple form	V-ing form
couldn't I manifold? couldn't you manifold? couldn't he manifold? couldn't we manifold? couldn't you manifold? couldn't they manifold?	couldn't I be manifolding? couldn't you be manifolding? couldn't he be manifolding? couldn't we be manifolding? couldn't you be manifolding? couldn't they be manifolding?
Perfect	V-ing perfect
couldn't I have manifolded? couldn't you have manifolded? couldn't he have manifolded? couldn't we have manifolded? couldn't you have manifolded? couldn't they have manifolded?	couldn't I have been manifolding? couldn't you have been manifolding? couldn't he have been manifolding? couldn't we have been manifolding? couldn't you have been manifolding? couldn't they have been manifolding?