2320,2321,2321,2321,2321,2322,2323,2324,2324,2325,2326,2326,2327,2327,2327,2327,2328,2328,2328,2327,2326,2326,2325,2324,2323,2323,2322,2322,2321,2321,2321,2320,2320,2320;876,876,875,874,873,873,873,873,874,874,874,875,875,876,877,878,878,879,880,880,880,881,881,881,881,880,880,879,879,878,877,877,876,876