<chr_abbr type="reg" class="dc" expan="Qui" cert="no">Q-vbar</chr_abbr> <chr_abbr type="frq" class="ss" expan="est" cert="no">est</chr_abbr> entre<chr_var letter="s" var="long">∫</chr_var> ence<chr_var letter="s" var="long">∫</chr_var>te <chr_abbr type="reg" class="dc" expan="" cert="no">tr-hbar</chr_abbr>e 