main

var a, b, c,a; // This is an error because one variable is declared twice!
{

let a<-call InputNum();
let b<-call InputNum();

if a<=b		

then
	let c<-	d;	// If in your parser are not initializing the declared variables, this line becomes an error because variable "d" is used without being initialized
	call OutputNum(c* call InputNum());
	call OutputNewLine();
	call OutputNewLine();
	call OutputNum(a);
	call OutputNewLine();
	call OutputNewLine();
	call OutputNum(b);	// This semicolon is an error, if you just implement the grammar you will catch this but just becareful about it

else

	let c<-b;
	call OutputNum(b);
	call OutputNewLine()
	
fi;

if 1<0
then
	if 3>2
	then
		call OutputNum(1000000000);
		let a<c;		// as the parser expects becomesToken (<-) and it is not there the parser should generate an error although the whole inner if statement should not be executed
		call OutputNewLine()
	else
		call OutputNum(2000000000);
		let c<a;		// The same as line 34 this error should be caught
		call OutputNewLine()
	fi

else
	if 6 > 4
	then
		call OutputNum(3000000000);
		call OutputNewLine();
		call OutputNum(4000000000);
		call OutputNewLine()
	else
		call OutputNum(5000000000);
		call OutputNewLine();
		call OutputNum(6000000000);
		call OutputNewLine();
	fi
fi
		

}.