2518,2517,2516,2515,2513,2513,2510,2511,2511,2510,2509,2508,2510,2511,2512,2514,2515,2517,2516,2516;1641,1638,1637,1634,1636,1637,1638,1639,1640,1642,1643,1644,1644,1645,1645,1647,1646,1646,1644,1642