C3132121111331312113313331333133313331333112331333132322112123121   >>    C313212111133131211331333133313331333133311233133313232211212312   <<    C3132121111331312113313331333133313331333112331333132322112123123   >>      C3132121111331312113313331333133313331333112331333132322112123122   >>