<chr_abbr type="frq" class="ss" expan="et" cert="yes">et1</chr_abbr> a<chr_var letter="s" var="long">∫</chr_var> fene<chr_var letter="s" var="long">∫</chr_var>tre<chr_var letter="s" var="long">∫</chr_var> <chr_abbr type="reg" class="dc" expan="en" cert="no">e-hbar</chr_abbr> Ama<chr_abbr type="reg" class="dc" expan="int" cert="no">it-hbar</chr_abbr> 