On the Subject of Simon Scrambles

He got lost. Which colors did he show? He doesn't remember.

10 colors will flash in a row. Each time each light means a different button.

Use the table below to know which button to press.

Time Blue Yellow Red Green
1 Yellow Green Blue Red
2 Green Blue Yellow Red
3 Red Green Yellow Blue
4 Red Yellow Green Blue
5 Red Blue Green Yellow
6 Blue Yellow Red Green
7 Yellow Green Blue Red
8 Yellow Blue Green Red
9 Red Yellow Blue Green
10 Green Red Yellow Blue

Note:

When pressing a wrong button, what you’ve already pressed is cleared.