Advanced randomization

Hi,

I have no experience in qualtrics and am running into some trouble.
I have an experimental setup, which I would like to do in Qualtrics as follows:
1) I would like the participant to read 1 of 3 stories
2) Page break
3) Rate 6 different stimuli, using sliders questions, on the same page

The problem is that the stimuli have to be randomized on several levels. First, I would like to draw 1 stimulus from a pair of 2 stimuli. Then I would like to repeat this for 7 pairs. From these 7 pairs I would like to draw 2 stimuli. Each pair is a member of a group. There are 3 collections in total from which i would like to draw 2 stimuli each, resulting in the 6 stimuli mentioned above. The order of these 6 stimuli I would like to randomize.
In summary we are talking about 3x7x2 options per conditions, from which I want to draw 3x2x1 stimuli per story.
I am able to do the randomization using blocks, but I am unable to present them on 1 page without breaks, allowing for a direct comparison of the stimuli. Whenever I use the block options and randomize the questions (putting the stimuli as sliders questions in a single block) I am unable to build in the randomization requirement mentioned above, since I can not define multiple subsets of questions (collections and group).
Is there any way to show multiple blocks in a single page? Or a way to define multiple subsets (read conditions) of questions and then use the block specific randomization function? Or is there a different way to do this altogether?

Thank you kindly in advance,

Jesse