C11111211113313112113313331333133313133313232233133313232233112113313231131   >>    C1111121111331311211331333133313331313331323223313331323223311211331323113   <<    C11111211113313112113313331333133313133313232233133313232233112113313231133   >>      C11111211113313112113313331333133313133313232233133313232233112113313231132   >>