Convert in less than 30 lines

gistfile1.py

data = '''\
  A, B, C
  A, C, E
  E, F, D
  D, A, J
  E, D, J'''
import itertools, collections
print "\n".join(["  "+", ".join(a + (str(b),)) for (a,b) in sorted(collections.Counter(sum([list(itertools.combinations(sorted(x.strip().split(', ')), 2)) for x in data.split('\n')], [])).items(), key=lambda t: t[0])])

#output:
'''
  A, B, 1
  A, C, 2
  A, D, 1
  A, E, 1
  A, J, 1
  B, C, 1
  C, E, 1
  D, E, 2
  D, F, 1
  D, J, 2
  E, F, 1
  E, J, 1
'''