C12313211232233312111111312111133133313331323133323132323322132213223321   >>    C1231321123223331211111131211113313331333132313332313232332213221322332   <<    C12313211232233312111111312111133133313331323133323132323322132213223323   >>      C12313211232233312111111312111133133313331323133323132323322132213223322   >>