[1mprint expression:1.14:[1;31m error:[0m[1m
   • syntax error, unexpected =, expecting ","
  [1;34m|[0m
[1;34m1[0m [1;34m| [0mGTR_sym +> (x[1;31m=[0m2) +> F
  [1;34m|[0m              [1;31m^[0m
