2518,2517,2516,2517,2518,2518,2519,2521,2522,2522,2523,2524,2524,2523,2523,2521,2520,2519;1641,1638,1637,1636,1634,1631,1630,1630,1631,1632,1633,1635,1636,1637,1638,1639,1640,1642