At a martial arts demonstration , a few men in white uniforms stand atop one another , doing stunts .
It is almost certain that there is a mix of white , blue , and green belts .
There is almost no chance that there is a mix of white , blue , and green belts .
It is almost certain that there is a mix of white , blue , and green belts .
There is a mix of white , blue , and green belts .