D i<chr_var letter="s" var="long">∫</chr_var>t q<chr_abbr type="reg" class="dc" expan="un" cert="no">u-hbar</chr_abbr> <chr_abbr type="frq" class="ss" expan="et" cert="yes">et1</chr_abbr> ie me<chr_var letter="s" var="long">∫</chr_var> <chr_abbr type="reg" class="ss" expan="com" cert="no">com</chr_abbr>dirai 