English verb conjugation
COULD TENDER

Regular verb: tender - tendered - tendered

Affirmation

Simple form	V-ing form
I could tender you could tender he could tender we could tender you could tender they could tender	I could be tendering you could be tendering he could be tendering we could be tendering you could be tendering they could be tendering
Perfect	V-ing perfect
I could have tendered you could have tendered he could have tendered we could have tendered you could have tendered they could have tendered	I could have been tendering you could have been tendering he could have been tendering we could have been tendering you could have been tendering they could have been tendering

Negation

Simple form	V-ing form
I could not tender you could not tender he could not tender we could not tender you could not tender they could not tender	I could not be tendering you could not be tendering he could not be tendering we could not be tendering you could not be tendering they could not be tendering
Perfect	V-ing perfect
I could not have tendered you could not have tendered he could not have tendered we could not have tendered you could not have tendered they could not have tendered	I could not have been tendering you could not have been tendering he could not have been tendering we could not have been tendering you could not have been tendering they could not have been tendering

Interrogative form

Simple form	V-ing form
could I tender? could you tender? could he tender? could we tender? could you tender? could they tender?	could I be tendering? could you be tendering? could he be tendering? could we be tendering? could you be tendering? could they be tendering?
Perfect	V-ing perfect
could I have tendered? could you have tendered? could he have tendered? could we have tendered? could you have tendered? could they have tendered?	could I have been tendering? could you have been tendering? could he have been tendering? could we have been tendering? could you have been tendering? could they have been tendering?

Interro-negative form

Simple form	V-ing form
could I not tender? could you not tender? could he not tender? could we not tender? could you not tender? could they not tender?	could I not be tendering? could you not be tendering? could he not be tendering? could we not be tendering? could you not be tendering? could they not be tendering?
Perfect	V-ing perfect
could I not have tendered? could you not have tendered? could he not have tendered? could we not have tendered? could you not have tendered? could they not have tendered?	could I not have been tendering? could you not have been tendering? could he not have been tendering? could we not have been tendering? could you not have been tendering? could they not have been tendering?