C12313211232233312111111312111133133313331323133313331122332321131221322123131   >>    C1231321123223331211111131211113313331333132313331333112233232113122132212313   <<    C12313211232233312111111312111133133313331323133313331122332321131221322123133   >>      C12313211232233312111111312111133133313331323133313331122332321131221322123132   >>