Chiasms in Proverbs 28:13-18

The righteous and the wicked appear in two overlapping chiasms in Proverbs 28:13-18. First, the two are contrasted in 28:13-14.

A: how the wicked dispose of their transgressions (28:13a)

  B: man repentant before Yahweh (28:13b)

  B': man with a right heart before Yahweh (28:14a)

A': what the wicked do with their hearts (28:14b)

This observation is then folded into the comparisons of Proverbs 28:13-18.

A: the righteous & the wicked receive just rewards from Yahweh (28:13-14)

  B: the righteous & the wicked as rulers (28:15-16)

A': the righteous & the wicked receive their due from fellow man (28:17-18)

The first of these chiasms is simply a neat and therefore memorable arrangement. If I am correct about the second, it suggests that 28:18 is not about eternal destiny, but how people are treated by their societies.