C11111211113313112113313331333133313133313232233133313113313331312323233231   >>    C1111121111331311211331333133313331313331323223313331311331333131232323323   <<    C11111211113313112113313331333133313133313232233133313113313331312323233233   >>      C11111211113313112113313331333133313133313232233133313113313331312323233232   >>