C1231321123223331211111131211113313331333132313332313133312232213132233111   >>    C123132112322333121111113121111331333133313231333231313331223221313223311   <<    C1231321123223331211111131211113313331333132313332313133312232213132233113   >>      C1231321123223331211111131211113313331333132313332313133312232213132233112   >>