English verb conjugation
COULD SUBIRRIGATE

Regular verb: subirrigate - subirrigated - subirrigated

Affirmation

Simple form	V-ing form
I could subirrigate you could subirrigate he could subirrigate we could subirrigate you could subirrigate they could subirrigate	I could be subirrigating you could be subirrigating he could be subirrigating we could be subirrigating you could be subirrigating they could be subirrigating
Perfect	V-ing perfect
I could have subirrigated you could have subirrigated he could have subirrigated we could have subirrigated you could have subirrigated they could have subirrigated	I could have been subirrigating you could have been subirrigating he could have been subirrigating we could have been subirrigating you could have been subirrigating they could have been subirrigating

Negation

Simple form	V-ing form
I could not subirrigate you could not subirrigate he could not subirrigate we could not subirrigate you could not subirrigate they could not subirrigate	I could not be subirrigating you could not be subirrigating he could not be subirrigating we could not be subirrigating you could not be subirrigating they could not be subirrigating
Perfect	V-ing perfect
I could not have subirrigated you could not have subirrigated he could not have subirrigated we could not have subirrigated you could not have subirrigated they could not have subirrigated	I could not have been subirrigating you could not have been subirrigating he could not have been subirrigating we could not have been subirrigating you could not have been subirrigating they could not have been subirrigating

Interrogative form

Simple form	V-ing form
could I subirrigate? could you subirrigate? could he subirrigate? could we subirrigate? could you subirrigate? could they subirrigate?	could I be subirrigating? could you be subirrigating? could he be subirrigating? could we be subirrigating? could you be subirrigating? could they be subirrigating?
Perfect	V-ing perfect
could I have subirrigated? could you have subirrigated? could he have subirrigated? could we have subirrigated? could you have subirrigated? could they have subirrigated?	could I have been subirrigating? could you have been subirrigating? could he have been subirrigating? could we have been subirrigating? could you have been subirrigating? could they have been subirrigating?

Interro-negative form

Simple form	V-ing form
could I not subirrigate? could you not subirrigate? could he not subirrigate? could we not subirrigate? could you not subirrigate? could they not subirrigate?	could I not be subirrigating? could you not be subirrigating? could he not be subirrigating? could we not be subirrigating? could you not be subirrigating? could they not be subirrigating?
Perfect	V-ing perfect
could I not have subirrigated? could you not have subirrigated? could he not have subirrigated? could we not have subirrigated? could you not have subirrigated? could they not have subirrigated?	could I not have been subirrigating? could you not have been subirrigating? could he not have been subirrigating? could we not have been subirrigating? could you not have been subirrigating? could they not have been subirrigating?