C1111233131211111211113313331333133313232232133313113313111133131121   >>    C111123313121111121111331333133313331323223213331311331311113313112   <<    C1111233131211111211113313331333133313232232133313113313111133131123   >>      C1111233131211111211113313331333133313232232133313113313111133131122   >>