How to move the last block under the penultimate block on flexbox?

Question

css

Good afternoon!
I'm laying out the menu. The first two items have one nested menu each, the last two do not. The task is for the first 2 points to be one after the other in a line, and the last 2 under each other.
It looks like this -
I'm doing it on flexbox, here's my example .

Answer 1

so merge the last two links into one li container? and make those links block