English verb conjugation
COULD SLOW

Regular verb: slow - slowed - slowed

Affirmation

Simple form	V-ing form
I could slow you could slow he could slow we could slow you could slow they could slow	I could be slowing you could be slowing he could be slowing we could be slowing you could be slowing they could be slowing
Perfect	V-ing perfect
I could have slowed you could have slowed he could have slowed we could have slowed you could have slowed they could have slowed	I could have been slowing you could have been slowing he could have been slowing we could have been slowing you could have been slowing they could have been slowing

Negation

Simple form	V-ing form
I couldn't slow you couldn't slow he couldn't slow we couldn't slow you couldn't slow they couldn't slow	I couldn't be slowing you couldn't be slowing he couldn't be slowing we couldn't be slowing you couldn't be slowing they couldn't be slowing
Perfect	V-ing perfect
I couldn't have slowed you couldn't have slowed he couldn't have slowed we couldn't have slowed you couldn't have slowed they couldn't have slowed	I couldn't have been slowing you couldn't have been slowing he couldn't have been slowing we couldn't have been slowing you couldn't have been slowing they couldn't have been slowing

Interrogative form

Simple form	V-ing form
could I slow? could you slow? could he slow? could we slow? could you slow? could they slow?	could I be slowing? could you be slowing? could he be slowing? could we be slowing? could you be slowing? could they be slowing?
Perfect	V-ing perfect
could I have slowed? could you have slowed? could he have slowed? could we have slowed? could you have slowed? could they have slowed?	could I have been slowing? could you have been slowing? could he have been slowing? could we have been slowing? could you have been slowing? could they have been slowing?

Interro-negative form

Simple form	V-ing form
couldn't I slow? couldn't you slow? couldn't he slow? couldn't we slow? couldn't you slow? couldn't they slow?	couldn't I be slowing? couldn't you be slowing? couldn't he be slowing? couldn't we be slowing? couldn't you be slowing? couldn't they be slowing?
Perfect	V-ing perfect
couldn't I have slowed? couldn't you have slowed? couldn't he have slowed? couldn't we have slowed? couldn't you have slowed? couldn't they have slowed?	couldn't I have been slowing? couldn't you have been slowing? couldn't he have been slowing? couldn't we have been slowing? couldn't you have been slowing? couldn't they have been slowing?