2173,2173,2172,2172,2173,2173,2175,2176,2177,2179,2181,2182,2182,2181,2180,2177,2176,2175;1012,1013,1014,1015,1016,1017,1018,1018,1017,1017,1018,1018,1015,1015,1014,1014,1013,1013