Remove all grammatical errors from this text: A short while ago, I did yoga 30minites after a long time.
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The first time I saw this, I was not sure what I was doing. I was not sure if I was doing it right.
The second time I saw this, I was not sure if I was doing it right. I was not sure if I was doing it right.
The third time I saw this, I was not sure if I was doing it right. I was not sure if I was doing it right.
The fourth time I saw this, I was not sure if