C3132121111331312113313331333133313331333112331333132321333112121   >>    C313212111133131211331333133313331333133311233133313232133311212   <<    C3132121111331312113313331333133313331333112331333132321333112123   >>      C3132121111331312113313331333133313331333112331333132321333112122   >>