<chr_abbr type="reg" class="dc" expan="Que" cert="no">Q-hbar</chr_abbr> pior <chr_abbr type="reg" class="dc" expan="que" cert="no">q-hbar</chr_abbr> <chr_var letter="s" var="long">∫</chr_var>ar<chr_abbr type="" class="" expan="" cert="no">[apost]</chr_abbr>r. <chr_var letter="s" var="long">∫</chr_var>t<chr_abbr type="reg" class="dc" expan="er" cert="no">[apost]</chr_abbr> 