They appear to be antagonistic on the surface, but in reality, they are seemingly not part of the same group.

Masasaku is my best friend.

Masatsugu is my best friend.

Shosuke is my best friend.

Kazumasa is my best friend.

This electronic circuit is designed using positive logic.

Masato is my best friend.

He practices every day to learn the correct Chinese pronunciation of characters.

Orthoclase is a type of mineral, mainly found in granite.

Hiragana is one of the characters in Japanese.