Hi. I looked at your task, ran through the script a few times, checked the output and am confused. The task presents randomly selected items from list1 and list2 (group A), then presents group A items in random order a second time. The task then selects more items from the previous lists (group B), and randomly presents the items from group B a second time.
It is a bit confusing that the instructions are part of the block randomization, as if group B is before group A then the instructions do not tell you what to do in the task.
Try indicating the blocks with (-), so (-1) instead of (1) so that there is always an output, and taking the instructions out of the block randomization. Check the log file to see whether the items are presented properly.
Sorry, if I am misunderstanding the question. Please clarify and unload the actual task, stim and log detailing what is not working the way you want. Hope this helps.