English verb conjugation
COULD RUSTLE

Regular verb: rustle - rustled - rustled

Affirmation

Simple form	V-ing form
I could rustle you could rustle he could rustle we could rustle you could rustle they could rustle	I could be rustling you could be rustling he could be rustling we could be rustling you could be rustling they could be rustling
Perfect	V-ing perfect
I could have rustled you could have rustled he could have rustled we could have rustled you could have rustled they could have rustled	I could have been rustling you could have been rustling he could have been rustling we could have been rustling you could have been rustling they could have been rustling

Negation

Simple form	V-ing form
I couldn't rustle you couldn't rustle he couldn't rustle we couldn't rustle you couldn't rustle they couldn't rustle	I couldn't be rustling you couldn't be rustling he couldn't be rustling we couldn't be rustling you couldn't be rustling they couldn't be rustling
Perfect	V-ing perfect
I couldn't have rustled you couldn't have rustled he couldn't have rustled we couldn't have rustled you couldn't have rustled they couldn't have rustled	I couldn't have been rustling you couldn't have been rustling he couldn't have been rustling we couldn't have been rustling you couldn't have been rustling they couldn't have been rustling

Interrogative form

Simple form	V-ing form
could I rustle? could you rustle? could he rustle? could we rustle? could you rustle? could they rustle?	could I be rustling? could you be rustling? could he be rustling? could we be rustling? could you be rustling? could they be rustling?
Perfect	V-ing perfect
could I have rustled? could you have rustled? could he have rustled? could we have rustled? could you have rustled? could they have rustled?	could I have been rustling? could you have been rustling? could he have been rustling? could we have been rustling? could you have been rustling? could they have been rustling?

Interro-negative form

Simple form	V-ing form
couldn't I rustle? couldn't you rustle? couldn't he rustle? couldn't we rustle? couldn't you rustle? couldn't they rustle?	couldn't I be rustling? couldn't you be rustling? couldn't he be rustling? couldn't we be rustling? couldn't you be rustling? couldn't they be rustling?
Perfect	V-ing perfect
couldn't I have rustled? couldn't you have rustled? couldn't he have rustled? couldn't we have rustled? couldn't you have rustled? couldn't they have rustled?	couldn't I have been rustling? couldn't you have been rustling? couldn't he have been rustling? couldn't we have been rustling? couldn't you have been rustling? couldn't they have been rustling?