Although there has been the addition of only a single bonder, the scope of atom-connectivity configurations has grown markedly. Inspection of Table , Table , and Table indicate that for the 𝒮 3 ℬ 2 class, there are 6 families with, due to D3h site symmetry, the 49 resultant species are collected into 9 genera. Distinctions between genera within a single family are based upon the combinations of bonder-site connection multiplicities. For example, in F1, genus 9 has the bonders connected to the same site whereas genus 10 has the bonders connected to different sites. In each case, both bonders are non-bridging,