gistfile1.py

#!/usr/bin/env python

import sys
from collections import defaultdict

seen = defaultdict(list)

for lineNumber, line in enumerate(sys.stdin):
    if lineNumber:
        fields = line.split('|')
        key = '|'.join(fields[:2] + fields[3:])
        seen[key].append(line)

for lines in seen.itervalues():
    if len(lines) > 1:
        for line in lines:
            print line,
        print