C1111233131211111211113313331333132313231323223313113313113322121   >>    C111123313121111121111331333133313231323132322331311331311332212   <<    C1111233131211111211113313331333132313231323223313113313113322123   >>      C1111233131211111211113313331333132313231323223313113313113322122   >>