Because it is only a vowel separator, if a Lojban orthography use, for example, {w} {j} {3} for IPA's [w] [j] [ʒ] respectively, it does not need any letter for a vowel separator. in such an orthography,
{coi fi'i .i ui e'u do lebna pa lo titspi .i ji'a tcati e'u}will be{coj fii .i wi eu do lebna pa lo titspi .i 3ia tcati eu}.Similarly, {ii} will be {ji}, and {ji} will be {3i} in that orthography.
mi'e la guskant