ROOT (token: short_text [lag_newlines/spaces] {pos_id})
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 ¦   ¦   °--SYMBOL_FUNCTION_CALL: c [0/0] {2}          
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 ¦   °--')': ) [0/0] {11}                              
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 ¦   ¦       °--')': ) [0/0] {24}                      
 ¦   °--')': ) [0/0] {25}                              
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 ¦   ¦       °--')': ) [0/0] {78}                      
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 ¦   ¦       °--SYMBOL: c [0/0] {93}                   
 ¦   °--')': ) [1/0] {95}                              
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 ¦   ¦--expr:  [0/0] {98}                              
 ¦   ¦   °--SYMBOL_FUNCTION_CALL: c [0/0] {97}         
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 ¦   ¦   °--expr:  [1/0] {109}                         
 ¦   ¦       °--SYMBOL: c [0/0] {108}                  
 ¦   °--')': ) [0/0] {110}                             
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 ¦   ¦--expr:  [0/0] {113}                             
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 ¦   ¦       °--SYMBOL: c [0/0] {123}                  
 ¦   °--')': ) [0/0] {125}                             
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 ¦   ¦   ¦--SPECIAL-PIPE: %>% [0/1] {137}              
 ¦   ¦   ¦--COMMENT: # 654 [0/4] {138}                 
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 ¦   ¦--'(': ( [0/1] {145}                             
 ¦   ¦--COMMENT: # rr [0/2] {146}                      
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 ¦   ¦   °--expr:  [1/0] {156}                         
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 ¦   ¦   ¦--SPECIAL-PIPE: %>% [0/1] {169}              
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 ¦   °--')': ) [1/0] {172}                             
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 ¦   °--')': ) [1/0] {187}                             
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 ¦   ¦   ¦--expr:  [0/0] {226}                         
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 ¦   ¦   ¦--'(': ( [0/0] {227}                         
 ¦   ¦   °--')': ) [0/0] {228}                         
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 ¦   °--expr:  [0/0] {231}                             
 ¦       °--SYMBOL: c [0/0] {230}                      
 ¦--COMMENT: # sho [2/0] {232}                         
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 ¦       °--')': ) [0/0] {241}                         
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 ¦   ¦--',': , [0/2] {248}                             
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 ¦   ¦   °--expr:  [0/0] {254}                         
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 ¦   ¦--expr:  [0/0] {258}                             
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 ¦   ¦--',': , [0/4] {262}                             
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 ¦   ¦--expr:  [0/0] {265}                             
 ¦   ¦   ¦--expr:  [0/1] {267}                         
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 ¦   ¦   °--expr:  [0/0] {270}                         
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 ¦   ¦--',': , [0/4] {271}                             
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 ¦   ¦   ¦--expr:  [0/1] {274}                         
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 ¦   °--')': ) [0/0] {278}                             
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 ¦   ¦--',': , [0/1] {285}                             
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 ¦   ¦   ¦--expr:  [0/1] {297}                         
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 ¦   °--')': ) [0/0] {301}                             
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 ¦   ¦   °--')': ) [0/0] {327}                         
 ¦   ¦--',': , [0/4] {328}                             
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 ¦   ¦--expr:  [0/0] {331}                             
 ¦   ¦   ¦--expr:  [0/1] {332}                         
 ¦   ¦   ¦   ¦--expr:  [0/0] {334}                     
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 ¦   ¦   ¦   °--')': ) [0/0] {342}                     
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 ¦   ¦   °--expr:  [0/0] {345}                         
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 ¦   ¦--',': , [0/4] {346}                             
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 ¦   ¦   ¦--expr:  [0/1] {349}                         
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 ¦   ¦   °--NUM_CONST: 2 [0/0] {388}                   
 ¦   ¦--',': , [0/1] {390}                             
 ¦   ¦--expr:  [0/0] {391}                             
 ¦   ¦   ¦--expr:  [0/1] {393}                         
 ¦   ¦   ¦   °--SYMBOL: x [0/0] {392}                  
 ¦   ¦   ¦--SPECIAL-PIPE: %>% [0/7] {394}              
 ¦   ¦   °--expr:  [1/0] {395}                         
 ¦   ¦       ¦--expr:  [0/0] {397}                     
 ¦   ¦       ¦   °--SYMBOL_FUNCTION_CALL: c [0/0] {396}
 ¦   ¦       ¦--'(': ( [0/0] {398}                     
 ¦   ¦       °--')': ) [0/0] {399}                     
 ¦   °--')': ) [0/0] {400}                             
 °--expr:  [3/0] {401}                                 
     ¦--'{': { [0/0] {402}                             
     ¦--expr:  [0/0] {403}                             
     ¦   ¦--expr:  [0/1] {406}                         
     ¦   ¦   °--SYMBOL: a [0/0] {405}                  
     ¦   ¦--SPECIAL-PIPE: %>% [0/1] {407}              
     ¦   ¦--expr:  [0/1] {409}                         
     ¦   ¦   °--SYMBOL: c [0/0] {408}                  
     ¦   ¦--'+': + [0/0] {410}                         
     ¦   °--expr:  [0/0] {412}                         
     ¦       °--NUM_CONST: 1 [0/0] {411}               
     °--'}': } [0/0] {413}                             
