I don't understand about some words that you use. What it means, and it's about the monkey, that I said, I don't understand how all of you mean? I am confused with your description.
I do not understand about the words you use. It means nothing and it's about the monkeys there. That I mention that I do not understand, you mean. I'm confused by your description.
I don't know about the words you use. What does it mean, and it's about the monkey? That I say I don't understand all of what you mean. I confused with your explanation.