ROOT (token: short_text [lag_newlines/spaces] {pos_id})
 ¦--expr: 1 /
2 [0/3] {1}                             
 ¦   ¦--expr: 1 [0/1] {4}                              
 ¦   ¦   °--NUM_CONST: 1 [0/0] {3}                     
 ¦   ¦--'/': / [0/0] {5}                               
 ¦   ¦--expr: 2 [1/1] {7}                              
 ¦   ¦   °--NUM_CONST: 2 [0/0] {6}                     
 ¦   ¦--'+': + [0/1] {8}                               
 ¦   °--expr: 3 *
1 [0/0] {9}                         
 ¦       ¦--expr: 3 [0/1] {14}                         
 ¦       ¦   °--NUM_CONST: 3 [0/0] {13}                
 ¦       ¦--'*': * [0/0] {15}                          
 ¦       ¦--expr: 17 [1/1] {17}                        
 ¦       ¦   °--NUM_CONST: 17 [0/0] {16}               
 ¦       ¦--'*': * [0/0] {18}                          
 ¦       ¦--expr: 22222 [1/1] {20}                     
 ¦       ¦   °--NUM_CONST: 22222 [0/0] {19}            
 ¦       ¦--'/': / [0/6] {21}                          
 ¦       ¦--expr: 19 [1/1] {23}                        
 ¦       ¦   °--NUM_CONST: 19 [0/0] {22}               
 ¦       ¦--'*': * [0/6] {24}                          
 ¦       °--expr: -1 [1/0] {25}                        
 ¦           ¦--'-': - [0/0] {26}                      
 ¦           °--expr: 1 [0/0] {28}                     
 ¦               °--NUM_CONST: 1 [0/0] {27}            
 °--expr: 3 * 2 [2/0] {29}                             
     ¦--expr: 3 [0/1] {31}                             
     ¦   °--NUM_CONST: 3 [0/0] {30}                    
     ¦--'*': * [0/1] {32}                              
     °--expr: 22 [0/0] {34}                            
         °--NUM_CONST: 22 [0/0] {33}                   
