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by mattkrause 1831 days ago
It sounds like you're thinking of "sequence alignment", which is a pretty standard bioinformatics tool.

BLAST (=Basic Local Alignment Search Tool) is one common version, and the NIH'S NCBI has a variety of nice online tools here: https://blast.ncbi.nlm.nih.gov/Blast.cgi

Note that it does take a little bit of background knowledge to interpret:some motifs are just really common, others are shared.