C111123313331323113313331331121111331323132322333121111133313231312311   >>    C11112331333132311331333133112111133132313232233312111113331323131231   <<    C111123313331323113313331331121111331323132322333121111133313231312313   >>      C111123313331323113313331331121111331323132322333121111133313231312312   >>