English verb conjugation
COULD BECKON

Regular verb: beckon - beckoned - beckoned

Affirmation

Simple form	V-ing form
I could beckon you could beckon he could beckon we could beckon you could beckon they could beckon	I could be beckoning you could be beckoning he could be beckoning we could be beckoning you could be beckoning they could be beckoning
Perfect	V-ing perfect
I could have beckoned you could have beckoned he could have beckoned we could have beckoned you could have beckoned they could have beckoned	I could have been beckoning you could have been beckoning he could have been beckoning we could have been beckoning you could have been beckoning they could have been beckoning

Negation

Simple form	V-ing form
I could not beckon you could not beckon he could not beckon we could not beckon you could not beckon they could not beckon	I could not be beckoning you could not be beckoning he could not be beckoning we could not be beckoning you could not be beckoning they could not be beckoning
Perfect	V-ing perfect
I could not have beckoned you could not have beckoned he could not have beckoned we could not have beckoned you could not have beckoned they could not have beckoned	I could not have been beckoning you could not have been beckoning he could not have been beckoning we could not have been beckoning you could not have been beckoning they could not have been beckoning

Interrogative form

Simple form	V-ing form
could I beckon? could you beckon? could he beckon? could we beckon? could you beckon? could they beckon?	could I be beckoning? could you be beckoning? could he be beckoning? could we be beckoning? could you be beckoning? could they be beckoning?
Perfect	V-ing perfect
could I have beckoned? could you have beckoned? could he have beckoned? could we have beckoned? could you have beckoned? could they have beckoned?	could I have been beckoning? could you have been beckoning? could he have been beckoning? could we have been beckoning? could you have been beckoning? could they have been beckoning?

Interro-negative form

Simple form	V-ing form
could I not beckon? could you not beckon? could he not beckon? could we not beckon? could you not beckon? could they not beckon?	could I not be beckoning? could you not be beckoning? could he not be beckoning? could we not be beckoning? could you not be beckoning? could they not be beckoning?
Perfect	V-ing perfect
could I not have beckoned? could you not have beckoned? could he not have beckoned? could we not have beckoned? could you not have beckoned? could they not have beckoned?	could I not have been beckoning? could you not have been beckoning? could he not have been beckoning? could we not have been beckoning? could you not have been beckoning? could they not have been beckoning?