Anyone who stayed alone placed himself outside this society and was therefore an enemy of it and sure to be killed on sight.

Ostriches are likely to be placed alone in the order Struthioniformes.

I was placed alone in a small cell.

This time he was led to and placed inside a small cell alone.

The species is placed alone in series B. ser.

It was previously placed alone in the family Sparganiaceae.

Almost 135,000 women were placed in Oregon alone.

It has no close relatives, and is now generally placed alone in family Emblingiaceae.

With no obvious relatives, the species was placed alone in a new series named Dryandra ser.

Accordingly, it was placed alone in a new series, B. ser.