digraph G {
"List:8" -> "SYMBOL:+"
"List:8" -> "List:5"
"List:8" -> "Number:3"
"List:5" -> "SYMBOL:+"
"List:5" -> "Number:1"
"List:5" -> "List:2"
"Number:1" -> 1 
"List:2" -> "SYMBOL:*"
"List:2" -> "Number:2"
"List:2" -> "Number:4"
"Number:2" -> 2 
"Number:4" -> 4 
"Number:3" -> 3 
}
(  +  (  +  1  (  *  2  4 ) )  3 )