For a a few SNPs from given gene, I know there happen to be several haplotypes that most of the population has. But from a person's data on those SNPs, we have two alleles at each SNP, so it's not trivial to match the SNP data to infer the person's haplotypes. When I search this I find tools that seem to be for haplotype reconstruction and SNP imputation, such as SHAPEIT, but this is not what I'm looking for.
Might someone know of a tool for this inference of known haplotypes from SNP data? It would be helpful even if someone could give me a name for this problem, as I'm not sure of the right term to search.