C11112331312111112111133132313331333133313233313331322132212131   >>    C1111233131211111211113313231333133313331323331333132213221213   <<    C11112331312111112111133132313331333133313233313331322132212133   >>      C11112331312111112111133132313331333133313233313331322132212132   >>