English verb conjugation
COULD AVERT

Regular verb: avert - averted - averted

Affirmation

Simple form	V-ing form
I could avert you could avert he could avert we could avert you could avert they could avert	I could be averting you could be averting he could be averting we could be averting you could be averting they could be averting
Perfect	V-ing perfect
I could have averted you could have averted he could have averted we could have averted you could have averted they could have averted	I could have been averting you could have been averting he could have been averting we could have been averting you could have been averting they could have been averting

Negation

Simple form	V-ing form
I couldn't avert you couldn't avert he couldn't avert we couldn't avert you couldn't avert they couldn't avert	I couldn't be averting you couldn't be averting he couldn't be averting we couldn't be averting you couldn't be averting they couldn't be averting
Perfect	V-ing perfect
I couldn't have averted you couldn't have averted he couldn't have averted we couldn't have averted you couldn't have averted they couldn't have averted	I couldn't have been averting you couldn't have been averting he couldn't have been averting we couldn't have been averting you couldn't have been averting they couldn't have been averting

Interrogative form

Simple form	V-ing form
could I avert? could you avert? could he avert? could we avert? could you avert? could they avert?	could I be averting? could you be averting? could he be averting? could we be averting? could you be averting? could they be averting?
Perfect	V-ing perfect
could I have averted? could you have averted? could he have averted? could we have averted? could you have averted? could they have averted?	could I have been averting? could you have been averting? could he have been averting? could we have been averting? could you have been averting? could they have been averting?

Interro-negative form

Simple form	V-ing form
couldn't I avert? couldn't you avert? couldn't he avert? couldn't we avert? couldn't you avert? couldn't they avert?	couldn't I be averting? couldn't you be averting? couldn't he be averting? couldn't we be averting? couldn't you be averting? couldn't they be averting?
Perfect	V-ing perfect
couldn't I have averted? couldn't you have averted? couldn't he have averted? couldn't we have averted? couldn't you have averted? couldn't they have averted?	couldn't I have been averting? couldn't you have been averting? couldn't he have been averting? couldn't we have been averting? couldn't you have been averting? couldn't they have been averting?