Combinatorics is a branch of mathematics dealing with issues of order and choice.

If you subtract the subtrahend from the minuend, you get the difference.

He was participating in a certain festival as part of phallus worship.

Phallicism was a part of ancient beliefs.

During World War II, Japan was part of the Axis powers.

I bought a new sweatsuit.

Solving problems of arithmetic sequence is difficult.

I was born and raised in Swansea.

I have visited the Crystal Palace.

I take the train from Suidobashi station every day.