C11111211113313112113313331333133313133313232233133313113313331323121   >>    C1111121111331311211331333133313331313331323223313331311331333132312   <<    C11111211113313112113313331333133313133313232233133313113313331323123   >>      C11111211113313112113313331333133313133313232233133313113313331323122   >>