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3. The list iterator of WHILE++, as introduced above, could also be regarded as a mere syntactic extension of WHILE (i.e. "syntax sugar). To demonstrate this, explain in detail how the command foreach x in E {S} can be translated into WHILE (without list iterators obviously) maintaining its original behaviour (i.e. semantics). Consider all possible forms of appear- ances of the iterator. Explain any assumptions you make. [18 marks) 3. The list iterator of WHILE++, as introduced above, could also be regarded as a mere syntactic extension of WHILE (i.e. "syntax sugar). To demonstrate this, explain in detail how the command foreach x in E {S} can be translated into WHILE (without list iterators obviously) maintaining its original behaviour (i.e. semantics). Consider all possible forms of appear- ances of the iterator. Explain any assumptions you make. [18 marks)