while

The ending glossed while takes these forms in the book's examples:

In the examples

I bought bread on my way home. · 18.5 -ken: while

Don't talk while you're eating. · 18.5 -ken: while

While I was cooking, Ali set the table. · 18.5 -ken: while

When I was a child, there was a park here. · 18.5 -ken: while

I saw Ayşe while I was in Istanbul. · 18.5 -ken: while

Ali came while you were out. · 18.5 -ken: while

I listened to the radio while I had breakfast. · 18.9 A morning, joined up