C11111211113313112113313331333133313221333133313113313331322331333233121   >>    C1111121111331311211331333133313331322133313331311331333132233133323312   <<    C11111211113313112113313331333133313221333133313113313331322331333233123   >>      C11111211113313112113313331333133313221333133313113313331322331333233122   >>