var exec = require('child_process').exec;

var numbers = [];

for (var j = 0, jj = 3; j <= jj; j++) {
	for (var i = 1, ii = 13; i <= ii; i++) {
		numbers.push(i);
	}
}

var count = 0;

var interval_id = setInterval(function () {
	var random_position = Math.floor(Math.random() * numbers.length);
	var number = numbers.splice(random_position, 1);

	exec('say ' + number[0]);

	if (++count === 25) {
		clearInterval(interval_id);
	}
}, 3000);