C11111211113313112113313331333133313133313232233133313113313331311331323131121   >>    C1111121111331311211331333133313331313331323223313331311331333131133132313112   <<    C11111211113313112113313331333133313133313232233133313113313331311331323131123   >>      C11111211113313112113313331333133313133313232233133313113313331311331323131122   >>