code: def associate_blocks(blocks, layout_pairs, start_peb_num):
      
      seq_blocks = []
      for layout_pair in layout_pairs:
          seq_blocks = sort.by_image_seq(blocks, blocks[layout_pair[0]].ec_hdr.image_seq)
  
          layout_pair.append(seq_blocks)
  
      return layout_pairs
docs: Group block indexes with appropriate layout pairs
  
      Arguments:
      List:blocks        -- List of block objects
      List:layout_pairs  -- List of grouped layout blocks
      Int:start_peb_num  -- Number of the PEB to start from.
  
      Returns:
      List -- Layout block pairs grouped with associated block ranges.