Aligned Pair Exclusion can be extended to Aligned Triple Exclusion and so on. In fact, the set of cells to be enumerated does not need to be aligned at all. Lacking a better name, let us call the resultant technique Subset Exclusion.
5+2+4 5+2+6 5+6+4 5+7+4* 5+7+6* 5+9+4* 5+9+6* 7+2+4 7+2+6 7+6+4 7+9+4 7+9+6
The starred combinations are those that causes any of the yellow cells to have no candidates at all, so these combinations can be removed from the list. As a result, we find that 7 can be eliminated from r2c4.
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