C3132121111133313233121111331333133313331333133313331333133313311211213121   >>    C313212111113331323312111133133313331333133313331333133313331331121121312   <<    C3132121111133313233121111331333133313331333133313331333133313311211213123   >>      C3132121111133313233121111331333133313331333133313331333133313311211213122   >>