(***********************************************************************

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        D\ *) \)\(\[IndentingNewLine]\)\(\[IndentingNewLine]\)\( (*\ 
      set\ lengths\ of\ linkages\ *) \)\(\[IndentingNewLine]\)\(L1\  = \ 
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Cell[BoxData[{
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Cell[BoxData[{
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Cell[BoxData[{
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Cell[CellGroupData[{

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