C1111133313331323223313331333133313113313231331121111113311231121   >>    C111113331333132322331333133313331311331323133112111111331123112   <<    C1111133313331323223313331333133313113313231331121111113311231123   >>      C1111133313331323223313331333133313113313231331121111113311231122   >>