from_stop_id,to_stop_id,transfer_type
20001013,20001013,1
20001149,20001149,1
20001407,20001407,1
20001489,20001768,
20001489,20001769,
20001768,20001489,
20001768,20002160,
20001769,20001489,
20001769,20002160,
20002160,20001768,
20002160,20001769,
20002372,20002372,1
