S el <chr_var letter="s" var="long">∫</chr_var>ace <chr_abbr type="frq" class="ss" expan="et" cert="yes">et1</chr_abbr> tire <chr_abbr type="frq" class="ss" expan="et" cert="yes">et1</chr_abbr><chr_var letter="s" var="long">∫</chr_var>ile<chr_var letter="s" var="long">∫</chr_var>tra<chr_abbr type="reg" class="dc" expan="int" cert="no">it-hbar</chr_abbr> 