Support phonemic transcriptions: `//t͡ʃɪ.ti.ˈma.t͡ʃa//` > `<span class=phon>t͡ʃɪ.ti.ˈma.t͡ʃa</span>` > `/t͡ʃɪ.ti.ˈma.t͡ʃa/`