From <span class="searchmatch">slaka</span>, syllable, called because it is used to indicate irregular syllabifications. <span class="searchmatch">slaka</span> <span class="searchmatch">bu</span> letteral: <span class="searchmatch">Lojban</span> "," character...
becomes a compound cmavo of selma'o BY. (<span class="searchmatch">Lojban</span> letterals) .abu, .ebu, .ibu, .obu, .ubu, .ybu, denpa <span class="searchmatch">bu</span>, <span class="searchmatch">slaka</span> <span class="searchmatch">bu</span> (Miscellaneous) .uibu, joibu, pi'ibu, tobu...