English verb conjugation
COULD PRETESTIFY

Regular verb: pretestify - pretestified - pretestified

Affirmation

Simple form	V-ing form
I could pretestify you could pretestify he could pretestify we could pretestify you could pretestify they could pretestify	I could be pretestifying you could be pretestifying he could be pretestifying we could be pretestifying you could be pretestifying they could be pretestifying
Perfect	V-ing perfect
I could have pretestified you could have pretestified he could have pretestified we could have pretestified you could have pretestified they could have pretestified	I could have been pretestifying you could have been pretestifying he could have been pretestifying we could have been pretestifying you could have been pretestifying they could have been pretestifying

Negation

Simple form	V-ing form
I couldn't pretestify you couldn't pretestify he couldn't pretestify we couldn't pretestify you couldn't pretestify they couldn't pretestify	I couldn't be pretestifying you couldn't be pretestifying he couldn't be pretestifying we couldn't be pretestifying you couldn't be pretestifying they couldn't be pretestifying
Perfect	V-ing perfect
I couldn't have pretestified you couldn't have pretestified he couldn't have pretestified we couldn't have pretestified you couldn't have pretestified they couldn't have pretestified	I couldn't have been pretestifying you couldn't have been pretestifying he couldn't have been pretestifying we couldn't have been pretestifying you couldn't have been pretestifying they couldn't have been pretestifying

Interrogative form

Simple form	V-ing form
could I pretestify? could you pretestify? could he pretestify? could we pretestify? could you pretestify? could they pretestify?	could I be pretestifying? could you be pretestifying? could he be pretestifying? could we be pretestifying? could you be pretestifying? could they be pretestifying?
Perfect	V-ing perfect
could I have pretestified? could you have pretestified? could he have pretestified? could we have pretestified? could you have pretestified? could they have pretestified?	could I have been pretestifying? could you have been pretestifying? could he have been pretestifying? could we have been pretestifying? could you have been pretestifying? could they have been pretestifying?

Interro-negative form

Simple form	V-ing form
couldn't I pretestify? couldn't you pretestify? couldn't he pretestify? couldn't we pretestify? couldn't you pretestify? couldn't they pretestify?	couldn't I be pretestifying? couldn't you be pretestifying? couldn't he be pretestifying? couldn't we be pretestifying? couldn't you be pretestifying? couldn't they be pretestifying?
Perfect	V-ing perfect
couldn't I have pretestified? couldn't you have pretestified? couldn't he have pretestified? couldn't we have pretestified? couldn't you have pretestified? couldn't they have pretestified?	couldn't I have been pretestifying? couldn't you have been pretestifying? couldn't he have been pretestifying? couldn't we have been pretestifying? couldn't you have been pretestifying? couldn't they have been pretestifying?