"from_stop_id","to_stop_id","transfer_type","min_transfer_time"
"LORETO M1","LORETO M2","0",""
"LORETO M2","LORETO M1","0",""
"CADORNA FN M1","CADORNA FN M2","0",""
"CADORNA FN M2","CADORNA FN M1","0",""
"DUOMO M1","DUOMO M3","0",""
"DUOMO M3","DUOMO M1","0",""