C1111133313331323223313331333133313113313231331121111112113313111   >>    C111113331333132322331333133313331311331323133112111111211331311   <<    C1111133313331323223313331333133313113313231331121111112113313113   >>      C1111133313331323223313331333133313113313231331121111112113313112   >>