C11112331312111112111133132313331333133313233313331312111133133313233313222211   >>    C1111233131211111211113313231333133313331323331333131211113313331323331322221   <<    C11112331312111112111133132313331333133313233313331312111133133313233313222213   >>      C11112331312111112111133132313331333133313233313331312111133133313233313222212   >>