<chr_abbr type="frq" class="ss" expan="et" cert="yes">et2</chr_abbr> <chr_var letter="s" var="long">∫</chr_var>uit len<chr_abbr type="reg" class="dc" expan="ani" cert="no">ai-hbar</chr_abbr> <chr_abbr type="reg" class="dc" expan="qui" cert="no">q-vbar</chr_abbr> <chr_abbr type="reg" class="sc" expan="tira" cert="no">ti-alpha</chr_abbr>la 