[05R]↺↻
[05S]↺↻
[05T]↺↻
[05V]↺↻
[05X]↺↻
[05Z]↺↻
[060]↺↻
[1Z2]↺↻
We suppose that \(A_ n\subseteq X\) for every \(n\). (We can set \(X=\bigcup _ n A_ n\)).
[ [062]↺↻]
[063]↺↻
[064]↺↻
[065]↺↻