English verb conjugation
COULD MOTTLE

Regular verb: mottle - mottled - mottled

Affirmation

Simple form	V-ing form
I could mottle you could mottle she could mottle we could mottle you could mottle they could mottle	I could be mottling you could be mottling she could be mottling we could be mottling you could be mottling they could be mottling
Perfect	V-ing perfect
I could have mottled you could have mottled she could have mottled we could have mottled you could have mottled they could have mottled	I could have been mottling you could have been mottling she could have been mottling we could have been mottling you could have been mottling they could have been mottling

Negation

Simple form	V-ing form
I couldn't mottle you couldn't mottle she couldn't mottle we couldn't mottle you couldn't mottle they couldn't mottle	I couldn't be mottling you couldn't be mottling she couldn't be mottling we couldn't be mottling you couldn't be mottling they couldn't be mottling
Perfect	V-ing perfect
I couldn't have mottled you couldn't have mottled she couldn't have mottled we couldn't have mottled you couldn't have mottled they couldn't have mottled	I couldn't have been mottling you couldn't have been mottling she couldn't have been mottling we couldn't have been mottling you couldn't have been mottling they couldn't have been mottling

Interrogative form

Simple form	V-ing form
could I mottle? could you mottle? could she mottle? could we mottle? could you mottle? could they mottle?	could I be mottling? could you be mottling? could she be mottling? could we be mottling? could you be mottling? could they be mottling?
Perfect	V-ing perfect
could I have mottled? could you have mottled? could she have mottled? could we have mottled? could you have mottled? could they have mottled?	could I have been mottling? could you have been mottling? could she have been mottling? could we have been mottling? could you have been mottling? could they have been mottling?

Interro-negative form

Simple form	V-ing form
couldn't I mottle? couldn't you mottle? couldn't she mottle? couldn't we mottle? couldn't you mottle? couldn't they mottle?	couldn't I be mottling? couldn't you be mottling? couldn't she be mottling? couldn't we be mottling? couldn't you be mottling? couldn't they be mottling?
Perfect	V-ing perfect
couldn't I have mottled? couldn't you have mottled? couldn't she have mottled? couldn't we have mottled? couldn't you have mottled? couldn't they have mottled?	couldn't I have been mottling? couldn't you have been mottling? couldn't she have been mottling? couldn't we have been mottling? couldn't you have been mottling? couldn't they have been mottling?