def count_clusters_no_pandas(inTbl, debug=False):
    """Count the clusters with orthologs."""
    from collections import Counter
    tmpDict = {}
    cnt = Counter()
    for line in open(inTbl):
        if line.startswith('#cl') or line.startswith('clusterID'):
            continue
        line = line.rstrip()
        flds = line.split('\t')
        clstrId = flds[0]
        if not clstrId in tmpDict:
            tmpDict[clstrId] = None
            cnt.update([flds[-1]])
    no_conflict = cnt['No']
    diff_names = cnt['diff. names']
    diff_numbers = cnt['diff. numbers']
    tot_conflicts = diff_names + diff_numbers
    clstrCnt = tot_conflicts + no_conflict
    if debug:
        print('Clusters:\t%d' % clstrCnt)
        print('No conflict:\t%d' % no_conflict)
        print('diff.names conflict:\t%d' % diff_names)
        print('diff.numbers conflict:\t%d' % diff_numbers)
        print('Total conflicts:\t%d' % tot_conflicts)
    return clstrCnt, no_conflict, diff_names, diff_numbers
