What is the structure of thin filament (composed of actin, troponin & tropomyosin) of myofibril of muscle cell?

Update: I am not talking about the structure of whole myofibril. I just want to know the arrangement of actin, troponin and tropomyosin molecules (or chains of molecules) in the thin filament on myofibril. [EDITED AFTER READING THE FIRST ANSWER]
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