D1122211211331313331323221123313233313112211232233131333131323221211   >>    D112221121133131333132322112331323331311221123223313133313132322121   <<    D1122211211331313331323221123313233313112211232233131333131323221213   >>      D1122211211331313331323221123313233313112211232233131333131323221212   >>