Drawing Bot Bebras 1 UK

The robot 'Drawbot' can drive and draw at the same time!
You can give the drawbot the following instructions: square, triangle, forward, turn.
The instructions work as follows:

You can also give a sequence of
commands to drawbot:
For instance: square, forward, triangle
The image below shows what will happen.

Which sequence of instructions causes
this to happen?

Answer :

triangle, turn, forward, square

Visualisation : https://scratch.mit.edu/projects/180821613/