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 couldn't present you couldn't present he couldn't present we couldn't present you couldn't present they couldn't present	I couldn't be presenting you couldn't be presenting he couldn't be presenting we couldn't be presenting you couldn't be presenting they couldn't be presenting
Perfect	V-ing perfect
I couldn't have presented you couldn't have presented he couldn't have presented we couldn't have presented you couldn't have presented they couldn't have presented	I couldn't have been presenting you couldn't have been presenting he couldn't have been presenting we couldn't have been presenting you couldn't have been presenting they couldn't 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
couldn't I present? couldn't you present? couldn't he present? couldn't we present? couldn't you present? couldn't they present?	couldn't I be presenting? couldn't you be presenting? couldn't he be presenting? couldn't we be presenting? couldn't you be presenting? couldn't they be presenting?
Perfect	V-ing perfect
couldn't I have presented? couldn't you have presented? couldn't he have presented? couldn't we have presented? couldn't you have presented? couldn't they have presented?	couldn't I have been presenting? couldn't you have been presenting? couldn't he have been presenting? couldn't we have been presenting? couldn't you have been presenting? couldn't they have been presenting?