Q<chr_abbr type="reg" class="dc" expan="ui" cert="no">apost</chr_abbr> cha<chr_var letter="s" var="long">∫</chr_var>cune langoi<chr_var letter="s" var="long">∫</chr_var><chr_var letter="s" var="long">∫</chr_var>e .<chr_abbr type="frq" class="ss" expan="et" cert="yes">et1</chr_abbr> po<chr_abbr type="reg" class="dc" expan="in" cert="no">i-hbar</chr_abbr>t 