SHELL_SCRIPT
  COMMANDS_LIST
    GENERIC_COMMAND_DIRECTIVE
      PsiElement($)('$')
      ARITHMETIC_EXPANSION
        PsiElement(()('(')
        PsiElement(()('(')
        LITERAL_EXPRESSION
          PsiElement($)('$')
          SUBSHELL_COMMAND
            PsiElement(()('(')
            COMPOUND_LIST
              SIMPLE_COMMAND
                GENERIC_COMMAND_DIRECTIVE
                  LITERAL
                    PsiElement(word)('echo')
                PsiWhiteSpace(' ')
                STRING
                  PsiElement(OPEN_QUOTE)('"')
                  VARIABLE
                    PsiElement(var)('$1')
                  PsiElement(CLOSE_QUOTE)('"')
            PsiElement())(')')
        PsiElement())(')')
        PsiElement())(')')