C12313211232233312111111312111133133313331323133313332221331212132222331323221   >>    C1231321123223331211111131211113313331333132313331333222133121213222233132322   <<    C12313211232233312111111312111133133313331323133313332221331212132222331323223   >>      C12313211232233312111111312111133133313331323133313332221331212132222331323222   >>