Their pronunciations are already not the same.. And to be honest, I seldom use 呗 as something to end my talk or my words.. As for 吧, it denotes suggestion, or doubts. For example, 我們去那邊吧!(Let's go there). Or 他好像去那裡了吧。(It seems that he's already gone to that place.)
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Has difficulty understanding even short answers in this language.
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