C11112331312111112111133133313331333133313123313331333131211331322131121   >>    C1111233131211111211113313331333133313331312331333133313121133132213112   <<    C11112331312111112111133133313331333133313123313331333131211331322131123   >>      C11112331312111112111133133313331333133313123313331333131211331322131122   >>