C11111211113313112113313331333133313221333133313113313331322121223222311   >>    C1111121111331311211331333133313331322133313331311331333132212122322231   <<    C11111211113313112113313331333133313221333133313113313331322121223222313   >>      C11111211113313112113313331333133313221333133313113313331322121223222312   >>