C12313211232233312111111312111133133313331323133313332322331212221231321333121   >>    C1231321123223331211111131211113313331333132313331333232233121222123132133312   <<    C12313211232233312111111312111133133313331323133313332322331212221231321333123   >>      C12313211232233312111111312111133133313331323133313332322331212221231321333122   >>