2169,2167,2166,2164,2164,2165,2165,2167,2168,2170,2171,2172,2173,2173,2173,2173,2172,2172,2171,2170;905,905,906,904,902,901,900,899,898,898,897,897,898,899,900,901,901,902,904,904