C12313211232233312111111312111133133313331323133311233111322131211211   >>    C1231321123223331211111131211113313331333132313331123311132213121121   <<    C12313211232233312111111312111133133313331323133311233111322131211213   >>      C12313211232233312111111312111133133313331323133311233111322131211212   >>