Everyone was surprised by the news.

His thoughts were as we expected.

When I hear that song, old memories come to mind.

This was truly an unexpected result.

I am surprised by this unexpected event.

He is a perfectionist, and his approach to work is very strict.

This programming language is said to be Turing complete.

In mathematics, a perfect number refers to a number where the sum of its divisors, excluding the number itself, equals the number.

His performance was perfect and without blemish.

He is immersed in the study of panmagic squares.