SHELL_SCRIPT
  COMMANDS_LIST
    SHELL_COMMAND
      ARITHMETIC_EXPANSION
        PsiElement(()('(')
        PsiElement(()('(')
        ASSIGNMENT_EXPRESSION
          LITERAL_EXPRESSION
            PsiElement(word)('number')
          PsiElement(|=)('|=')
          LITERAL_EXPRESSION
            NUMBER
              PsiElement(int)('5')
        PsiElement())(')')
        PsiElement())(')')
  PsiElement(\n)('\n')
  COMMANDS_LIST
    SHELL_COMMAND
      ARITHMETIC_EXPANSION
        PsiElement(()('(')
        PsiElement(()('(')
        ASSIGNMENT_EXPRESSION
          LITERAL_EXPRESSION
            PsiElement(word)('number')
          PsiElement(&=)('&=')
          LITERAL_EXPRESSION
            NUMBER
              PsiElement(int)('5')
        PsiElement())(')')
        PsiElement())(')')