C3132121111331312113313331333133313332313223313331333132212112121   >>    C313212111133131211331333133313331333231322331333133313221211212   <<    C3132121111331312113313331333133313332313223313331333132212112123   >>      C3132121111331312113313331333133313332313223313331333132212112122   >>