Nini
When
Yini
Why/what is it
Ngaki
How many
Kangaki
How often
Phi/kuphi
Where/which/which one
Ngani
By means of what/how
Njani/kanjani
How/what kind
Ngakanani
How many/how long
Ubani
Who
Siphi/li phi/ziphi
Which
Ngubani
Who is it
Nobani
With whom
Kungani
Why