C111123313121111121111331333133313331323231333133313331312331312231221   >>    C11112331312111112111133133313331333132323133313331333131233131223122   <<    C111123313121111121111331333133313331323231333133313331312331312231223   >>      C111123313121111121111331333133313331323231333133313331312331312231222   >>