$4.$Using the token types and classification values given in Figure $11\mathrm{.}3,$ show the output of a scanner when it is presented with each of the following statements:

limit $=$ begin $+$ end

a $=$ b $1$;

if $($c $==50)$ x $=1$; else y $=$ x $+44$;

thenelse $==$ error $$