In Exercises $6\mathrm{.}2\mathrm{.}12$ through $6\mathrm{.}2\mathrm{.}15,$ apply Algorithm $6\mathrm{.}2\mathrm{.}2$ to find a minimum$-$weight

positman tour for the given weighted graph. Determine whether the solution is unique.

$6\mathrm{.}2\mathrm{.}15$