C11111211113313112113313331333133313331333132313331333133313331322232223121   >>    C1111121111331311211331333133313331333133313231333133313331333132223222312   <<    C11111211113313112113313331333133313331333132313331333133313331322232223123   >>      C11111211113313112113313331333133313331333132313331333133313331322232223122   >>