C111123313331323113313331333133313331323131211113313121111331333132313231323311   >>    C11112331333132311331333133313331333132313121111331312111133133313231323132331   <<    C111123313331323113313331333133313331323131211113313121111331333132313231323313   >>      C111123313331323113313331333133313331323131211113313121111331333132313231323312   >>