C1111133313331323223313331333133313113313231331121111121111112231231   >>    C111113331333132322331333133313331311331323133112111112111111223123   <<    C1111133313331323223313331333133313113313231331121111121111112231233   >>      C1111133313331323223313331333133313113313231331121111121111112231232   >>