C12313211232233312111111312111133133313331323133313332322321123122333131   >>    C1231321123223331211111131211113313331333132313331333232232112312233313   <<    C12313211232233312111111312111133133313331323133313332322321123122333133   >>      C12313211232233312111111312111133133313331323133313332322321123122333132   >>