C12313211232233312111111312111133133313331323133313332322321121311   >>    C1231321123223331211111131211113313331333132313331333232232112131   <<    C12313211232233312111111312111133133313331323133313332322321121313   >>      C12313211232233312111111312111133133313331323133313332322321121312   >>