C12313211232233312111111312111133133313331323133323132213211132231   >>    C1231321123223331211111131211113313331333132313332313221321113223   <<    C12313211232233312111111312111133133313331323133323132213211132233   >>      C12313211232233312111111312111133133313331323133323132213211132232   >>