D21221323131123313131333132233131133131323223313232212121111331312323311   >>    D2122132313112331313133313223313113313132322331323221212111133131232331   <<    D21221323131123313131333132233131133131323223313232212121111331312323313   >>      D21221323131123313131333132233131133131323223313232212121111331312323312   >>