7seconds really

This game ok. But I do not know how to get past the crab part?!?? And its super aanoing to have to wait 7 seconds every time you mess up!!! Because if your like me it takes you about 30 tries to finally pass it which is 7 minutes if just siting there waiting. And pop up adds are super aanoing. plz help with the crab?

Rachel;( about The Impossible Test WATER