from_stop_id,to_stop_id,transfer_type
23907_02,23907_02,
23907_02,23907_03,
23907_02,23907_04,
23907_03,23907_02,
23907_03,23907_03,
23907_03,23907_04,
23907_04,23907_02,
23907_04,23907_03,
23907_04,23907_04,
23911_01,23911_01,
23911_01,23911_02,
23911_02,23911_01,
23911_02,23911_02,
