C1111233131211111211113313331333133313211231211111133132322331131   >>    C111123313121111121111331333133313331321123121111113313232233113   <<    C1111233131211111211113313331333133313211231211111133132322331133   >>      C1111233131211111211113313331333133313211231211111133132322331132   >>