웃음 문자 'ㅋㅋㅋㅋ', 다른 나라에선 어떻게 쓸까?

세계 여러 나라에서는 온라인에서 대화를 나누거나, 문자를 할 때, '웃음'을 어떻게 표현할까.

A woman, sitting in a car, laughing with a phone in her hand

A woman smiling and writing on her phone

An illustration of "jajajajajaja"

Happy young woman holding smart phone

Young woman with a checked red and black shirt. She's laughing and holding a smarphone. Bright green background.

Girls lying down on a bench, by the sea, texting