Travelling by bus in Burkina Faso

During my travel to Burkina Faso, I stayed very few time in Ouagadougou, because the main destination was Nouna, in the west part of the country. The only way to go there is with a 4x4 or the regular bus line of "Liza Transport International". As I had no 4x4, I chose Liza.... what a travel!