2152,2151,2151,2152,2154,2155,2155,2154,2152,2151,2151,2152,2156,2156,2157,2158,2159,2159,2158,2158,2157,2157,2155,2154;900,899,898,897,897,896,894,893,893,892,891,890,890,891,892,892,893,895,896,897,898,899,899,900