C12313211232233312111111312111133133313331323133311233111322311111   >>    C1231321123223331211111131211113313331333132313331123311132231111   <<    C12313211232233312111111312111133133313331323133311233111322311113   >>      C12313211232233312111111312111133133313331323133311233111322311112   >>