C11111211113313112113313331333133313331333132313331333133313232223312131   >>    C1111121111331311211331333133313331333133313231333133313331323222331213   <<    C11111211113313112113313331333133313331333132313331333133313232223312133   >>      C11111211113313112113313331333133313331333132313331333133313232223312132   >>