D1121211233131133131323132213231333131323223313232211221123231323123221   >>    D112121123313113313132313221323133313132322331323221122112323132312322   <<    D1121211233131133131323132213231333131323223313232211221123231323123223   >>      D1121211233131133131323132213231333131323223313232211221123231323123222   >>