English verb conjugation
COULD PRESENT

Regular verb: present - presented - presented

Affirmation

Simple form	V-ing form
I could present you could present he could present we could present you could present they could present	I could be presenting you could be presenting he could be presenting we could be presenting you could be presenting they could be presenting
Perfect	V-ing perfect
I could have presented you could have presented he could have presented we could have presented you could have presented they could have presented	I could have been presenting you could have been presenting he could have been presenting we could have been presenting you could have been presenting they could have been presenting

Negation

Simple form	V-ing form
I could not present you could not present he could not present we could not present you could not present they could not present	I could not be presenting you could not be presenting he could not be presenting we could not be presenting you could not be presenting they could not be presenting
Perfect	V-ing perfect
I could not have presented you could not have presented he could not have presented we could not have presented you could not have presented they could not have presented	I could not have been presenting you could not have been presenting he could not have been presenting we could not have been presenting you could not have been presenting they could not have been presenting

Interrogative form

Simple form	V-ing form
could I present? could you present? could he present? could we present? could you present? could they present?	could I be presenting? could you be presenting? could he be presenting? could we be presenting? could you be presenting? could they be presenting?
Perfect	V-ing perfect
could I have presented? could you have presented? could he have presented? could we have presented? could you have presented? could they have presented?	could I have been presenting? could you have been presenting? could he have been presenting? could we have been presenting? could you have been presenting? could they have been presenting?

Interro-negative form

Simple form	V-ing form
could I not present? could you not present? could he not present? could we not present? could you not present? could they not present?	could I not be presenting? could you not be presenting? could he not be presenting? could we not be presenting? could you not be presenting? could they not be presenting?
Perfect	V-ing perfect
could I not have presented? could you not have presented? could he not have presented? could we not have presented? could you not have presented? could they not have presented?	could I not have been presenting? could you not have been presenting? could he not have been presenting? could we not have been presenting? could you not have been presenting? could they not have been presenting?