"height:4.71354em;vertical-align:-2.10677em;"></span><span class="mord"><span class="mtable"><span class="col-align-r"><span class="vlist-t vlist-t2"><span class="vlist-r"><span class="vlist" style="height:2.60677em;"><span style="top:-4.76677em;"><span class="pstrut" style="height:3em;"></span><span class="mord"><span class="mord coloredeq eqk" style=""><span class="mord" style=""><span class="mord mathnormal" style="margin-right:0.03785em">δ</span><span class="msupsub"><span class="vlist-t vlist-t2"><spa