C11111211113313112113313331333133313331333121131211111133133313232132322311   >>    C1111121111331311211331333133313331333133312113121111113313331323213232231   <<    C11111211113313112113313331333133313331333121131211111133133313232132322313   >>      C11111211113313112113313331333133313331333121131211111133133313232132322312   >>