utput all combinations of character variables $a,b,$ and $c,$ in the order shown below. After the final $c\text{'},b=\text{'}y\text{'},$ and $c=\text{'}z\text{'},$ then the output is:

yz xzy yxz yzx zxy zyx

our code will be tested in three different programs, with $a,b,c$ assigned with $\text{'}x\text{'},\text{'}y\text{'},\text{'}z\text{'},$ then with $\text{'}$#$\text{'},\text{'}$$$\text{'}$

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$433163271440\mathrm{.}932017$

#include cin$a$;$ca={?}^{x}b={?}^{\text{'}}{y}^{\text{'}}c={?}^{\text{'}}z$