How to randomize questions before and after a block without repetition

Hello everyone,



I need to randomize 12 questions such that 6 of them appear before a block of text (in random order) and 6 of them appear after that block of text without displaying any questions twice (thus, no question presented before the text block would be shown afterward). I understand how to randomize questions within a block, or randomly display only 6 of them. So, what I need to know is how do I display 6 before and 6 after a text block? And how do I ensure that no questions are repeated? Thanks!



So far the set up is:



Question block:

Q1

Q2

Q3

Q4 Randomly display 6 of 12 questions in random order before text block

Q5

Q6

Q7

Q8

Q9

Q10

Q11

Q12





TEXT BLOCK