[SOLVED] Using MaxPool2d

It might be an easy question but I am not familiar with Maxpool layer.
When I use Embedding layer it increases the dimention of tensor.

embedding = nn.Embedding(10, 5)
input = torch.LongTensor([[[1,2,4,5],[4,3,2,9]],[[1,2,4,5],[4,3,2,9]]])
output = embedding(input)
input.seze() 
torch.Size([2, 2, 4])
output.size()
torch.Size([2, 2, 4, 5])

I want to add an Maxpool2d(or any other layer) layer to conver my output to
torch.Size([2, 2, 1, 5])
Let say my output vector is:

tensor([[[[7, 0, 0, 3, 6],
          [6, 7, 5, 2, 0],
          [2, 1, 9, 1, 9],
          [1, 5, 8, 6, 1]],

         [[4, 7, 2, 4, 5],
          [4, 4, 2, 6, 2],
          [9, 1, 0, 3, 5],
          [5, 7, 6, 5, 8]]],

        [[[9, 6, 0, 6, 0],
          [8, 9, 7, 0, 2],
          [4, 7, 7, 4, 5],
          [7, 9, 1, 0, 8]],

         [[6, 4, 5, 7, 6],
          [2, 2, 4, 9, 4],
          [7, 7, 9, 0, 0],
          [6, 8, 8, 4, 1]]]])

I want to convert it to :
torch.Size([2, 2, 1, 5])

tensor([[[[7, 7, 9, 6, 9]],

         [[9, 7, 6, 6, 8]]],

         [[[9, 9, 7, 6, 8]],

         [[7, 8, 9, 9, 6]]]])

So I can then convert it to
torch.Size([2, 2, 5])

I have flagged topic to remove but I found the answer :

m = nn.MaxPool2d((4,1))
output = m(input)