<chr_var letter="S" var="1">S1</chr_var> entreui<chr_abbr type="reg" class="dc" expan="en" cert="no">e-hbar</chr_abbr>nent tot fr<chr_abbr type="reg" class="dc" expan="on" cert="no">o-hbar</chr_abbr>t a fr<chr_abbr type="reg" class="dc" expan="on" cert="no">o-hbar</chr_abbr>t. 