$6.($Address Assignment$)$ IP addresses are assigned to organizations as shown in the table on the left below. Display the dotted decimal IP addresses assigned to each organization according to the rules below. $($Notation: $215\mathrm{.}22\mathrm{.}16/24)(8$pt$)$

Nodes indicated by rectangles in the figure are denoted as $\backslash (\backslash$mathrm$\{$X$\}$: $\backslash$mathrm$\{$N$\}\backslash ),$ where X represents the organization name and $\backslash ($ N $\backslash )$ represents the minimum number of IPs to be held. In this case, express the IP ranges of $\backslash ($ A$,$ A$-1,$ A$-1-5\backslash ),$ A$-3,$ and A$-3-5.$

$-$ Each organization must be represented by a single dotted decimal, and no two organizations must have overlapping address ranges.

$-$ When allocating IPs, organizations with smaller numbers are assigned smaller IP numbers than organizations with larger numbers $($e$.$g$.$

A$-1-1$ is assigned a smaller IP number than A$-1-2).$

$-$ If possible, assign small numbers. $($Only the smallest answer $($one$)$ that satisfies all the rules is accepted as the correct answer.$)$

Organizational chart and number of IPs assigned to the organization