function playDokoZun() {
const sounds = ['ズン', 'ドコ'];
let sequence = [];
while (true) {
const sound = sounds[Math.floor(Math.random() * sounds.length)];
sequence.push(sound);
if (sequence.slice(-4).join('') === 'ズンズンズンズン' && sequence.slice(-1)[0] === 'ドコ') {
return new Celebration('キ・ヨ・シ!');
}
}
}
