multi-scale patch embedding

[Doraemonzm]

Thanks for your great work!
In your paper, you propose a multi-scale patch embedding that tokenizes the patches of different sizes at the same time by overlapping convolution operations
But I notice that the patch sizes are fixed as 3.
Additionary, the spatial sizes of the inputs for the mhca_stages in different paths are identical.
So what does it means for multi-scale patch embedding?
Looking forward to your reply！