C1111133313331323223313331333133313113313231331121111331333212221   >>    C111113331333132322331333133313331311331323133112111133133321222   <<    C1111133313331323223313331333133313113313231331121111331333212223   >>      C1111133313331323223313331333133313113313231331121111331333212222   >>