10 They are also seven kings. Five have fallen, one is, the other has not yet come; but when he does come, he must remain for only a little while.

Read Revelation 17:10 Using Other Translations

And there are seven kings: five are fallen, and one is, and the other is not yet come; and when he cometh, he must continue a short space.
they are also seven kings, five of whom have fallen, one is, the other has not yet come, and when he does come he must remain only a little while.
Five kings have already fallen, the sixth now reigns, and the seventh is yet to come, but his reign will be brief.