Is Two Sons and a Daughter or Two Daughters and a Son Considered Yichud?

Greetings and blessings. Having one daughter with two sons is permitted, provided the sons are not promiscuous; otherwise, it is forbidden. Likewise, at night, it is prohibited to be alone with two sons. Two daughters with one son is forbidden. An uncle is considered like any other unrelated man, and it is forbidden to be alone with him. Regarding the elevator, if less than half a minute has passed since it closed, there is no yichud concern; if it takes more than half a minute, then it is prohibited to be in yichud.