3 *
2**6
-----
Groovy script
  Multiplicative expression
    Literal
      PsiElement(Integer)('3')
    PsiWhiteSpace(' ')
    PsiElement(*)('*')
    PsiElement(new line)('\n')
    Power expression
      Literal
        PsiElement(Integer)('2')
      PsiElement(**)('**')
      Literal
        PsiElement(Integer)('6')