C12313211232233312111111312111133133313331323133313332322321121323233311   >>    C1231321123223331211111131211113313331333132313331333232232112132323331   <<    C12313211232233312111111312111133133313331323133313332322321121323233313   >>      C12313211232233312111111312111133133313331323133313332322321121323233312   >>