C11111211113313112113313331333133313133313232233133313121121131   >>    C1111121111331311211331333133313331313331323223313331312112113   <<    C11111211113313112113313331333133313133313232233133313121121133   >>      C11111211113313112113313331333133313133313232233133313121121132   >>