A lc<chr_abbr type="reg" class="dc" expan="un" cert="no">u-hbar</chr_abbr> engin <chr_var letter="s" var="long">∫</chr_var>eon<chr_abbr type="reg" class="dc" expan="que" cert="no">q-hbar</chr_abbr><chr_var letter="s" var="long">∫</chr_var> <chr_abbr type="reg" class="dc" expan="pus" cert="no">p-nine</chr_abbr> 