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 couldn't beckon you couldn't beckon he couldn't beckon we couldn't beckon you couldn't beckon they couldn't beckon	I couldn't be beckoning you couldn't be beckoning he couldn't be beckoning we couldn't be beckoning you couldn't be beckoning they couldn't be beckoning
Perfect	V-ing perfect
I couldn't have beckoned you couldn't have beckoned he couldn't have beckoned we couldn't have beckoned you couldn't have beckoned they couldn't have beckoned	I couldn't have been beckoning you couldn't have been beckoning he couldn't have been beckoning we couldn't have been beckoning you couldn't have been beckoning they couldn't 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
couldn't I beckon? couldn't you beckon? couldn't he beckon? couldn't we beckon? couldn't you beckon? couldn't they beckon?	couldn't I be beckoning? couldn't you be beckoning? couldn't he be beckoning? couldn't we be beckoning? couldn't you be beckoning? couldn't they be beckoning?
Perfect	V-ing perfect
couldn't I have beckoned? couldn't you have beckoned? couldn't he have beckoned? couldn't we have beckoned? couldn't you have beckoned? couldn't they have beckoned?	couldn't I have been beckoning? couldn't you have been beckoning? couldn't he have been beckoning? couldn't we have been beckoning? couldn't you have been beckoning? couldn't they have been beckoning?