Английское предложение с firstly

Nobody above the rank of sergeant except for two, firstly the senior officer present, who was a captain, and his second-in-command, who was a lieutenant.”
I spent the travel time thinking, firstly about what Sansom had said, and what he hadn’t.
Lily knew nothing about pregnancy but, having once got Halima’s bulge in focus, she decided two things: firstly that the birth must be imminent and secondly that it was a physical impossibility.
This was firstly because the princes were all thoroughly determined, and secondly because the Great Sage Sun had given them the divine strength beforehand that enabled them to lift and move the thousand-pound cudgel and the eight-hundred-pound rake and staff.