Lying down to rest in the afternoon when circumstances permit.

In due course, when economic circumstances permit, we would like to rebuild it.

I was glad that circumstances would not permit an interview to take place between us.

I wish that circumstances permitted me to explain more gradually.

Though if circumstances permitted, I would expect to do it that way.

Indeed, if circumstances permit, I may seek such a position at some point in the future.

He always wanted to study at university, but circumstances never permitted him to do so.

Although the government is working on changes, it cannot do much more than what circumstances permit.

If circumstances permit, we will meet again on 23 and 24 February.

The reading is done as and when the circumstances permit.