Try the tasks:
[Experiment 1 task][1]
[Experiments 2 and 3 task][2]
[Experiment 4 task][3]
[Experiment 5 task][4]
[1]: https://koumurayama.com/experiments/LF/sm/tasks/ff/ff_task_E1.html
[2]: https://koumurayama.com/experiments/LF/sm/tasks/ff/ff_task_E2_3.html
[3]: https://koumurayama.com/experiments/LF/sm/tasks/ff/ff_task_E4.html
[4]: https://koumurayama.com/experiments/LF/sm/tasks/ff/ff_task_E5.html