ROOT (token: short_text [lag_newlines/spaces] {pos_id})
 °--expr:  [0/0] {0.9}                                 
     ¦--expr:  [0/1] {2}                               
     ¦   °--SYMBOL: a [0/0] {1}                        
     ¦--EQ_ASSIGN: = [0/1] {3}                         
     ¦--expr:  [0/1] {5}                               
     ¦   °--SYMBOL: b [0/0] {4}                        
     ¦--EQ_ASSIGN: = [0/1] {6}                         
     ¦--expr:  [0/1] {8}                               
     ¦   °--SYMBOL: c [0/0] {7}                        
     ¦--EQ_ASSIGN: = [0/1] {9}                         
     ¦--expr:  [0/1] {11}                              
     ¦   °--SYMBOL: d [0/0] {10}                       
     ¦--EQ_ASSIGN: = [0/1] {12}                        
     ¦--expr:  [0/1] {14}                              
     ¦   °--SYMBOL: e [0/0] {13}                       
     ¦--EQ_ASSIGN: = [0/1] {15}                        
     ¦--expr:  [0/7] {17}                              
     ¦   °--SYMBOL: f [0/0] {16}                       
     ¦--EQ_ASSIGN: = [0/1] {18}                        
     ¦--expr:  [0/1] {20}                              
     ¦   °--SYMBOL: g [0/0] {19}                       
     ¦--EQ_ASSIGN: = [0/1] {21}                        
     °--expr:  [0/0] {23}                              
         °--NUM_CONST: 4 [0/0] {22}                    
