C12313211232233312111111312111133133313331323133313332322321123323221233231   >>    C1231321123223331211111131211113313331333132313331333232232112332322123323   <<    C12313211232233312111111312111133133313331323133313332322321123323221233233   >>      C12313211232233312111111312111133133313331323133313332322321123323221233232   >>