C1111133313331323223313331333133313113313231331121133131121133112121   >>    C111113331333132322331333133313331311331323133112113313112113311212   <<    C1111133313331323223313331333133313113313231331121133131121133112123   >>      C1111133313331323223313331333133313113313231331121133131121133112122   >>