$sz=\{\text{'}aa\text{'}$:$\text{'}\text{'},\text{'}ee\text{'}$:$\text{'}\text{'},\text{'}uu\text{'}$:$\text{'}\text{'},\text{'}ll\text{'}$:$\text{'}\text{'},\text{'}nn\text{'}$: $\text{'}\text{'},\text{'}ss\text{'}$: $\text{'}\text{'},\text{'}cc\text{'}$:$\text{'}\text{'},\text{'}zz\text{'}$:$\text{'}\text{'},\text{'}xx\text{'}$:$\text{'}\text{'}\}$

# which instructions should be inserted here to obtain the following result

$\{\text{'}\text{'}$: $\text{'}aa\text{'},\text{'}\text{'}$: $\text{'}ee\text{'},\text{'}\text{'}$: $\text{'}uu\text{'},\text{'}\text{'}$: $\text{'}ll\text{'},\text{'}\text{'}$: $\text{'}nn\text{'},\text{'}\text{'}$: $\text{'}ss\text{'},\text{'}\text{'}$: $\text{'}cc\text{'},\text{'}\text{'}$: $\text{'}zz\text{'},\text{'}\text{'}$: $\text{'}xx\text{'}\}$

A$)$

$de=[]$

for $k,winsz.$items$()$:

$,de[w]=k$

print$(de)$

B$)$

$de=\{\}$

for $k,winsz.$items$()$:

$,de[w]=k$

print$(de)$

C$)$

$de=[]$

for $k,winsz.$items$()$:

$de.$append$((w,k))$

print$(de)$

for $k,$w in sz$.$items$()$:

de$.$append$(($w$,$k$))$

print$($de$)$

D$)$ de $=\{\}$

for k$,$w in sz$.$items$()$:

de$.$append $((w,k))$

print$($de$)$