11. Sometimes the speaker adds " OK, " sometimes it's just a matter of a rising tone . 12. Rising tones are rather uncommon, as they tend to be replaced by high, low or mid.13. It could also be read in the rising tone , meaning " stubborn " or " forced ". 14. Rising tones ( low high ) simplify to after ( without triggering downstep ) and to before.15. A language with contour tones will also generally have as many or more falling tones than rising tones . 16. Acute accents mark a rising tone . 17. Rising air is announced to the pilot as a rising tone , with increasing pitch as the lift increases. 18. The opening section features an ostinato played by the bongos, while the harpsichord plays mainly rising tone clusters. 19. !Kung is famous for having a large number of nasal " u " vowel with a high rising tone . 20. There are, however, no syllables in Luganda with rising tone [ �� ], since these automatically become [ �� ].