English verb conjugation
COULD EVINCE

Regular verb: evince - evinced - evinced

Affirmation

Simple form	V-ing form
I could evince you could evince he could evince we could evince you could evince they could evince	I could be evincing you could be evincing he could be evincing we could be evincing you could be evincing they could be evincing
Perfect	V-ing perfect
I could have evinced you could have evinced he could have evinced we could have evinced you could have evinced they could have evinced	I could have been evincing you could have been evincing he could have been evincing we could have been evincing you could have been evincing they could have been evincing

Negation

Simple form	V-ing form
I couldn't evince you couldn't evince he couldn't evince we couldn't evince you couldn't evince they couldn't evince	I couldn't be evincing you couldn't be evincing he couldn't be evincing we couldn't be evincing you couldn't be evincing they couldn't be evincing
Perfect	V-ing perfect
I couldn't have evinced you couldn't have evinced he couldn't have evinced we couldn't have evinced you couldn't have evinced they couldn't have evinced	I couldn't have been evincing you couldn't have been evincing he couldn't have been evincing we couldn't have been evincing you couldn't have been evincing they couldn't have been evincing

Interrogative form

Simple form	V-ing form
could I evince? could you evince? could he evince? could we evince? could you evince? could they evince?	could I be evincing? could you be evincing? could he be evincing? could we be evincing? could you be evincing? could they be evincing?
Perfect	V-ing perfect
could I have evinced? could you have evinced? could he have evinced? could we have evinced? could you have evinced? could they have evinced?	could I have been evincing? could you have been evincing? could he have been evincing? could we have been evincing? could you have been evincing? could they have been evincing?

Interro-negative form

Simple form	V-ing form
couldn't I evince? couldn't you evince? couldn't he evince? couldn't we evince? couldn't you evince? couldn't they evince?	couldn't I be evincing? couldn't you be evincing? couldn't he be evincing? couldn't we be evincing? couldn't you be evincing? couldn't they be evincing?
Perfect	V-ing perfect
couldn't I have evinced? couldn't you have evinced? couldn't he have evinced? couldn't we have evinced? couldn't you have evinced? couldn't they have evinced?	couldn't I have been evincing? couldn't you have been evincing? couldn't he have been evincing? couldn't we have been evincing? couldn't you have been evincing? couldn't they have been evincing?