[패턴기초] Part 1. 패턴을 왜 만들어야 할까요?[Basic pattern] Why do we have to make a pattern?

[패턴기초] Part 2. 일자패턴과 십자패턴[Basic pattern] Straight pattern & Cross pattern

[패턴기초] Part 3. 곡선패턴[Basic pattern] Curve pattern

[패턴응용] Part 4. 카드케이스 패턴 만들기[Intensive pattern] Make a card case pattern