I could megaphone you could megaphone he could megaphone we could megaphone you could megaphone they could megaphone
V-ing form
I could be megaphoning you could be megaphoning he could be megaphoning we could be megaphoning you could be megaphoning they could be megaphoning
Perfect
I could have megaphoned you could have megaphoned he could have megaphoned we could have megaphoned you could have megaphoned they could have megaphoned
V-ing perfect
I could have been megaphoning you could have been megaphoning he could have been megaphoning we could have been megaphoning you could have been megaphoning they could have been megaphoning
Negation
Simple form
I could not megaphone you could not megaphone he could not megaphone we could not megaphone you could not megaphone they could not megaphone
V-ing form
I could not be megaphoning you could not be megaphoning he could not be megaphoning we could not be megaphoning you could not be megaphoning they could not be megaphoning
Perfect
I could not have megaphoned you could not have megaphoned he could not have megaphoned we could not have megaphoned you could not have megaphoned they could not have megaphoned
V-ing perfect
I could not have been megaphoning you could not have been megaphoning he could not have been megaphoning we could not have been megaphoning you could not have been megaphoning they could not have been megaphoning
Interrogative form
Simple form
could I megaphone? could you megaphone? could he megaphone? could we megaphone? could you megaphone? could they megaphone?
V-ing form
could I be megaphoning? could you be megaphoning? could he be megaphoning? could we be megaphoning? could you be megaphoning? could they be megaphoning?
Perfect
could I have megaphoned? could you have megaphoned? could he have megaphoned? could we have megaphoned? could you have megaphoned? could they have megaphoned?
V-ing perfect
could I have been megaphoning? could you have been megaphoning? could he have been megaphoning? could we have been megaphoning? could you have been megaphoning? could they have been megaphoning?
Interro-negative form
Simple form
could I not megaphone? could you not megaphone? could he not megaphone? could we not megaphone? could you not megaphone? could they not megaphone?
V-ing form
could I not be megaphoning? could you not be megaphoning? could he not be megaphoning? could we not be megaphoning? could you not be megaphoning? could they not be megaphoning?
Perfect
could I not have megaphoned? could you not have megaphoned? could he not have megaphoned? could we not have megaphoned? could you not have megaphoned? could they not have megaphoned?
V-ing perfect
could I not have been megaphoning? could you not have been megaphoning? could he not have been megaphoning? could we not have been megaphoning? could you not have been megaphoning? could they not have been megaphoning?