Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could excite excite you could excite excite he could excite excite we could excite excite you could excite excite they could excite excite
V-ing form
I could be excite exciting you could be excite exciting he could be excite exciting we could be excite exciting you could be excite exciting they could be excite exciting
Perfect
I could have excite excited you could have excite excited he could have excite excited we could have excite excited you could have excite excited they could have excite excited
V-ing perfect
I could have been excite exciting you could have been excite exciting he could have been excite exciting we could have been excite exciting you could have been excite exciting they could have been excite exciting
Negation
Simple form
I could not excite excite you could not excite excite he could not excite excite we could not excite excite you could not excite excite they could not excite excite
V-ing form
I could not be excite exciting you could not be excite exciting he could not be excite exciting we could not be excite exciting you could not be excite exciting they could not be excite exciting
Perfect
I could not have excite excited you could not have excite excited he could not have excite excited we could not have excite excited you could not have excite excited they could not have excite excited
V-ing perfect
I could not have been excite exciting you could not have been excite exciting he could not have been excite exciting we could not have been excite exciting you could not have been excite exciting they could not have been excite exciting
Interrogative form
Simple form
could I excite excite? could you excite excite? could he excite excite? could we excite excite? could you excite excite? could they excite excite?
V-ing form
could I be excite exciting? could you be excite exciting? could he be excite exciting? could we be excite exciting? could you be excite exciting? could they be excite exciting?
Perfect
could I have excite excited? could you have excite excited? could he have excite excited? could we have excite excited? could you have excite excited? could they have excite excited?
V-ing perfect
could I have been excite exciting? could you have been excite exciting? could he have been excite exciting? could we have been excite exciting? could you have been excite exciting? could they have been excite exciting?
Interro-negative form
Simple form
could I not excite excite? could you not excite excite? could he not excite excite? could we not excite excite? could you not excite excite? could they not excite excite?
V-ing form
could I not be excite exciting? could you not be excite exciting? could he not be excite exciting? could we not be excite exciting? could you not be excite exciting? could they not be excite exciting?
Perfect
could I not have excite excited? could you not have excite excited? could he not have excite excited? could we not have excite excited? could you not have excite excited? could they not have excite excited?
V-ing perfect
could I not have been excite exciting? could you not have been excite exciting? could he not have been excite exciting? could we not have been excite exciting? could you not have been excite exciting? could they not have been excite exciting?