Randomization

Hi,
I'm a student in Ben Gurion University my study is a within subject experiment with two levels of independent variable (red condition and blue condition) in the study.
in the practice phase, we have a block which contains one picture of fixation point, 4 pictures of geometric shapes- 2 triangles, one in red and one in blue, 2 circles- one in red and one in blue, and at the end a question with 2 optional question.
the pictures should be presented by the order I mentioned, but I want randomization of the 4 geometric shapes in a way that each subject will see one shape of the 4, and the practice phase will end after he saw all 4 shapes.
in short, I would like a randomization of 4 shapes and 4 return so that the subject will see them all.
I would be grateful for your help! this is my number in case you will be able to contact me
and this is the link of the study- https://bgupsych.eu.qualtrics.com/Q/EditSection/Blocks?LoginAction=EditSection&ContextSurveyID=SV_7PovwiCaUE0ryGG
thank you, Or. :)