English verb conjugation
COULD TOOL

Regular verb: tool - tooled - tooled

Affirmation

Simple form	V-ing form
I could tool you could tool he could tool we could tool you could tool they could tool	I could be tooling you could be tooling he could be tooling we could be tooling you could be tooling they could be tooling
Perfect	V-ing perfect
I could have tooled you could have tooled he could have tooled we could have tooled you could have tooled they could have tooled	I could have been tooling you could have been tooling he could have been tooling we could have been tooling you could have been tooling they could have been tooling

Negation

Simple form	V-ing form
I couldn't tool you couldn't tool he couldn't tool we couldn't tool you couldn't tool they couldn't tool	I couldn't be tooling you couldn't be tooling he couldn't be tooling we couldn't be tooling you couldn't be tooling they couldn't be tooling
Perfect	V-ing perfect
I couldn't have tooled you couldn't have tooled he couldn't have tooled we couldn't have tooled you couldn't have tooled they couldn't have tooled	I couldn't have been tooling you couldn't have been tooling he couldn't have been tooling we couldn't have been tooling you couldn't have been tooling they couldn't have been tooling

Interrogative form

Simple form	V-ing form
could I tool? could you tool? could he tool? could we tool? could you tool? could they tool?	could I be tooling? could you be tooling? could he be tooling? could we be tooling? could you be tooling? could they be tooling?
Perfect	V-ing perfect
could I have tooled? could you have tooled? could he have tooled? could we have tooled? could you have tooled? could they have tooled?	could I have been tooling? could you have been tooling? could he have been tooling? could we have been tooling? could you have been tooling? could they have been tooling?

Interro-negative form

Simple form	V-ing form
couldn't I tool? couldn't you tool? couldn't he tool? couldn't we tool? couldn't you tool? couldn't they tool?	couldn't I be tooling? couldn't you be tooling? couldn't he be tooling? couldn't we be tooling? couldn't you be tooling? couldn't they be tooling?
Perfect	V-ing perfect
couldn't I have tooled? couldn't you have tooled? couldn't he have tooled? couldn't we have tooled? couldn't you have tooled? couldn't they have tooled?	couldn't I have been tooling? couldn't you have been tooling? couldn't he have been tooling? couldn't we have been tooling? couldn't you have been tooling? couldn't they have been tooling?