C1111133313331323223313331333133313113313231331121111113313233123131   >>    C111113331333132322331333133313331311331323133112111111331323312313   <<    C1111133313331323223313331333133313113313231331121111113313233123133   >>      C1111133313331323223313331333133313113313231331121111113313233123132   >>