<chr_abbr type="reg" class="dc" expan="Qui" cert="no">Q-vbar</chr_abbr> lpen<chr_var letter="s" var="long">∫</chr_var>e <chr_abbr type="frq" class="ss" expan="et" cert="yes">et1</chr_abbr> demore <chr_abbr type="frq" class="ss" expan="et" cert="yes">et1</chr_abbr> are<chr_var letter="s" var="long">∫</chr_var>t <chr_var letter="E" var="2">E2</chr_var>. 