D21221323131123313131333132233131133131323223313132213231323132311   >>    D2122132313112331313133313223313113313132322331313221323132313231   <<    D21221323131123313131333132233131133131323223313132213231323132313   >>      D21221323131123313131333132233131133131323223313132213231323132312   >>