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-We introduce several new classes of graphs on which the maximum-weight clique problem is solvable in polynomial time. Their common feature, and the central idea of euw algorithms, is that every clique of any of-ou graphs is contained in some member of a polynomial-sized collection of induced subgraphs that are complements of bipartite graphs. -Our approach is quite gEneral, and might conceivably yield many other classes of raphs along with corresponding polynomial time algorithms. / / 1 ,-,