[ [ ( KeywordTok , "function" )
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  ]
, [ ( NormalTok , "  " )
  , ( FunctionTok , "isempty" )
  , ( NormalTok , "(str) " )
  , ( OperatorTok , "&&" )
  , ( NormalTok , " " )
  , ( ControlFlowTok , "return" )
  , ( NormalTok , " " )
  , ( ConstantTok , "true" )
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, [ ( NormalTok , "  " )
  , ( ControlFlowTok , "for" )
  , ( NormalTok , " i " )
  , ( OperatorTok , "=" )
  , ( NormalTok , " " )
  , ( FloatTok , "1" )
  , ( OperatorTok , ":" )
  , ( FunctionTok , "length" )
  , ( NormalTok , "(list)" )
  ]
, [ ( NormalTok , "    str[" )
  , ( KeywordTok , "end" )
  , ( NormalTok , "] " )
  , ( KeywordTok , "in" )
  , ( NormalTok , " list[i] " )
  , ( OperatorTok , "&&" )
  , ( NormalTok , " " )
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  , ( NormalTok , "([" )
  , ( FunctionTok , "abc" )
  , ( NormalTok , "(str[" )
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  , ( NormalTok , "], " )
  , ( FunctionTok , "deleteat!" )
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  ]
, [ ( NormalTok , "  " ) , ( ControlFlowTok , "end" ) ]
, [ ( NormalTok , "  " ) , ( ConstantTok , "false" ) ]
, [ ( KeywordTok , "end" ) ]
]