C12313211232233312111111312111133133313331323133313333232233313213131   >>    C1231321123223331211111131211113313331333132313331333323223331321313   <<    C12313211232233312111111312111133133313331323133313333232233313213133   >>      C12313211232233312111111312111133133313331323133313333232233313213132   >>