ddo</span>

      <span style="color: #b22222;">! </span><span style="color: #b22222;">Aggregate communications</span>
      <span style="color: #b22222;">! </span><span style="color: #b22222;">First pass: find out how many there are, on the basis</span>
      <span style="color: #b22222;">! </span><span style="color: #b22222;">of groups of orbitals that share the same source and</span>
      <span style="color: #b22222;">! </span><span style="color: #b22222;">destination. Due to the form of the distributio