List state$\_$codes$\_$list is created with the first four state codes read from input. Remove state code $\text{'}$CT$\text{'}$ from state$\_$codes$\_$list. Then, read the last state code from input and append the state code to state$\_$codes$\_$list.

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Ex: If the input is:

CA

CT

WV

OK

RI

then the outpurf is:

$[\text{'}[$:$C{A}^{\text{'}},{?}^{\text{'}}W{V}^{\text{'}},{?}^{\text{'}}O{K}^{\text{'}},{?}^{\text{'}}R{I}^{\text{'}}\}$