According to one analysis, tones are carried on morae. In Luganda, a short vowel has one mora and a long vowel has two morae. A geminate or prenasalised consonant has one mora. A consonant + semivowel (e.g. "gw" or "ly") also has one mora. A vowel followed by a prenasalised consonant has two morae "including" the one belonging to the prenasalised consonant. The initial vowel of words like "ekitabo" 'book' is considered to have one mora, even though such vowels are often pronounced long. No syllable can have more than two morae.