1段:01.02.03.04.05.06.07.08.09.10
2段:11.12.13.14.15.16.17.18.19.20
3段:21.22.23.24.25.26.27.28.29.30
4段:31.32.33.34.35.36.37.38.39.40
5段:41.42.43.44.45.46.47.48.49