C12313211232233312111111312111133133313331323133322233121321322131   >>    C1231321123223331211111131211113313331333132313332223312132132213   <<    C12313211232233312111111312111133133313331323133322233121321322133   >>      C12313211232233312111111312111133133313331323133322233121321322132   >>