C111123313121111121111331333133313331323231333133313331333131211111333131231221   >>    C11112331312111112111133133313331333132323133313331333133313121111133313123122   <<    C111123313121111121111331333133313331323231333133313331333131211111333131231223   >>      C111123313121111121111331333133313331323231333133313331333131211111333131231222   >>