C111123313121111121111331333133313331333131233133313233313231321123131   >>    C11112331312111112111133133313331333133313123313331323331323132112313   <<    C111123313121111121111331333133313331333131233133313233313231321123133   >>      C111123313121111121111331333133313331333131233133313233313231321123132   >>