2820,2821,2821,2823,2823,2824,2824,2826,2826,2828,2828,2829,2829,2830,2830,2833,2833,2833,2833,2832,2831,2831,2830,2830,2829,2828,2821,2821,2820;640,640,641,641,642,642,643,643,644,644,643,643,644,644,643,643,642,641,639,639,639,638,638,637,637,637,637,638,638