class Test {
    static function main() {
        var arr = [[1, 2], [4, 5, 5, 6], [7, 8, 9]];
        for (i in 0...arr.length) {
            for (j in 0...arr[i].length) {
                trace("arr["+i+", "+j+"]="+ arr[i][j]);
            }
        }
    }
}