C1111133313331323223313331333133313113313231331121111121111112233311   >>    C111113331333132322331333133313331311331323133112111112111111223331   <<    C1111133313331323223313331333133313113313231331121111121111112233313   >>      C1111133313331323223313331333133313113313231331121111121111112233312   >>