<chr_var letter="N" var="1">N1</chr_var> ei<chr_var letter="s" var="long">∫</chr_var> li c<chr_abbr type="reg" class="dc" expan="" cert="no">h-hbar</chr_abbr>r<chr_var letter="s" var="long">∫</chr_var> u<chr_abbr type="reg" class="dc" expan="er" cert="no">[apost]</chr_abbr> mau<chr_var letter="s" var="long">∫</chr_var> 