English verb conjugation
COULD IRRIGATE

Regular verb: irrigate - irrigated - irrigated

Affirmation

Simple form	V-ing form
I could irrigate you could irrigate he could irrigate we could irrigate you could irrigate they could irrigate	I could be irrigating you could be irrigating he could be irrigating we could be irrigating you could be irrigating they could be irrigating
Perfect	V-ing perfect
I could have irrigated you could have irrigated he could have irrigated we could have irrigated you could have irrigated they could have irrigated	I could have been irrigating you could have been irrigating he could have been irrigating we could have been irrigating you could have been irrigating they could have been irrigating

Negation

Simple form	V-ing form
I couldn't irrigate you couldn't irrigate he couldn't irrigate we couldn't irrigate you couldn't irrigate they couldn't irrigate	I couldn't be irrigating you couldn't be irrigating he couldn't be irrigating we couldn't be irrigating you couldn't be irrigating they couldn't be irrigating
Perfect	V-ing perfect
I couldn't have irrigated you couldn't have irrigated he couldn't have irrigated we couldn't have irrigated you couldn't have irrigated they couldn't have irrigated	I couldn't have been irrigating you couldn't have been irrigating he couldn't have been irrigating we couldn't have been irrigating you couldn't have been irrigating they couldn't have been irrigating

Interrogative form

Simple form	V-ing form
could I irrigate? could you irrigate? could he irrigate? could we irrigate? could you irrigate? could they irrigate?	could I be irrigating? could you be irrigating? could he be irrigating? could we be irrigating? could you be irrigating? could they be irrigating?
Perfect	V-ing perfect
could I have irrigated? could you have irrigated? could he have irrigated? could we have irrigated? could you have irrigated? could they have irrigated?	could I have been irrigating? could you have been irrigating? could he have been irrigating? could we have been irrigating? could you have been irrigating? could they have been irrigating?

Interro-negative form

Simple form	V-ing form
couldn't I irrigate? couldn't you irrigate? couldn't he irrigate? couldn't we irrigate? couldn't you irrigate? couldn't they irrigate?	couldn't I be irrigating? couldn't you be irrigating? couldn't he be irrigating? couldn't we be irrigating? couldn't you be irrigating? couldn't they be irrigating?
Perfect	V-ing perfect
couldn't I have irrigated? couldn't you have irrigated? couldn't he have irrigated? couldn't we have irrigated? couldn't you have irrigated? couldn't they have irrigated?	couldn't I have been irrigating? couldn't you have been irrigating? couldn't he have been irrigating? couldn't we have been irrigating? couldn't you have been irrigating? couldn't they have been irrigating?