D1212121212131323131133132311233132322331323321211113313232212331   >>    D121212121213132313113313231123313232233132332121111331323221233   <<    D1212121212131323131133132311233132322331323321211113313232212333   >>      D1212121212131323131133132311233132322331323321211113313232212332   >>