for b in range(batch_size):
      col1.append(
          ['batch%d-FC1-F1' % b, 'batch%d-FC1-F2' % b, 'batch%d-FC1-F3' % b])
      col2.append(['batch%d-FC2-F1' % b])
      col3.append(['batch%d-FC3-F1' % b, 'batch%d-FC3-F2' % b])