C11111211113313112113313331333133313133313232233133313233231131   >>    C1111121111331311211331333133313331313331323223313331323323113   <<    C11111211113313112113313331333133313133313232233133313233231133   >>      C11111211113313112113313331333133313133313232233133313233231132   >>