Tone: Unsigned: F0, F0 - 30, F0 - 50, F0 - 60, grave accent: F0, F0 - 30, F0 - 50, F0 - 80, acute accent: F0 - 60, F0 - 80, F0 + 70, question accent: F0 - F0 - 85, F0 - 90, F0-F0 + 30, fall accent: F0, F0 - 60, F0 + 40, F0 + 90, heavy accent: F0, F0-90, F0-120, F0-140.