#!/usr/bin/env python

import sys
import json

# input comes from STDIN
for line in sys.stdin:
	# remove whitespace and split row into values
	line_split = line.strip().split("\t")
	# load trace into list of activities
	activities = json.loads(line_split[2])
	for i in range(len(activities)-1):
		# write the results to STDOUT;
    	# key: (from,to), value: 1 (count of the relation)
		stru = activities[i] + "," + activities[i + 1]
		print('%s\t%s' % (stru, 1))
