<chr_abbr type="frq" class="ss" expan="et" cert="yes">et1</chr_abbr> q<chr_abbr type="reg" class="sc" expan="nra" cert="no">n-alpha</chr_abbr>til le<chr_var letter="s" var="long">∫</chr_var> out for<chr_var letter="s" var="long">∫</chr_var> mi <chr_var letter="S" var="1">S1</chr_var>. 