to deal with emergency situations . 不眠不休に なってしまうわけですから。
accordingly , iemasa merged the seven vassal families with the five main retainer families and named them " taishinshu " (literally , people of high rank ), and decided that five or six families out of twelve families alternately attend to governmental affairs every month; 12 families cooperatively deal with emergency situations . そこで、族臣7家と老臣5家を合一し『大身衆』と呼称変更させた上に、その12家の中から5、6家が毎月交代で国政を担当し、有事には12家が協力して対応するように改めたのである。