C111123313121111121111331333133313331323133313231333133313331333132323132211   >>    C11112331312111112111133133313331333132313331323133313331333133313232313221   <<    C111123313121111121111331333133313331323133313231333133313331333132323132213   >>      C111123313121111121111331333133313331323133313231333133313331333132323132212   >>