$[$Please solve for me $7]$ For each pair of simple graphs $G$ and $G^{\text{'}}$ in $6-13,$ determine whether $G$ and $G^{\text{'}}$ are isomorphic. If they are, give a function $g$:$V(G)V(G^{\text{'}})$ that defines the isomorphism. If they are not, give an invariant for graph isomorphism that they do not share.