“…However, since products are not removed from the line until the last stage, product 6 remains on the line until the job <4,6> starts in station (15,5) at 34th minute. Therefore, product 6 blocks the station (6,2) in between the 29th and 32th minutes, then it is transferred to station (7,3) in the third stage and it blocks this station in between 32th and 34th minutes. Next, it is moved to station (11,4) in stage four at 34th minute and immediately it is transferred to station (15,5) in stage five.…”