def loadOrthos(aabrhFN):
    """Reads the all around best reciprocal hits orthologs file. One set
per line."""
    f = open(aabrhFN, 'r')
    orthoL = []
    while True:
        s = f.readline()
        if s == '':
            break
        L = s.rstrip().split('\t')
        orthoL.append(tuple(map(int, L)))
    f.close()
    return orthoL
