<chr_abbr type="frq" class="ss" expan="et" cert="yes">et2</chr_abbr> di<chr_var letter="s" var="long">∫</chr_var>t ia pui<chr_var letter="s" var="long">∫</chr_var> dex ne me do<chr_abbr type="reg" class="dc" expan="in" cert="no">i-hbar</chr_abbr>t 