// No.1475 時計の歯車Easy
package main

import (
	"bufio"
	"fmt"
	"os"
	"slices"
	"strconv"
	"strings"
)

var sc = bufio.NewScanner(os.Stdin)
var wr = bufio.NewWriter(os.Stdout)

func next() string {
	sc.Scan()
	return sc.Text()
}

func nextInt() int {
	i, _ := strconv.Atoi(next())
	return i
}

func nextFloat() float64 {
	f, _ := strconv.ParseFloat(next(), 64)
	return f
}

func nextInts(n int) []int {
	ret := make([]int, n)
	for i := 0; i < n; i++ {
		ret[i] = nextInt()
	}
	return ret
}

func nextFloats(n int) []float64 {
	ret := make([]float64, n)
	for i := 0; i < n; i++ {
		ret[i] = nextFloat()
	}
	return ret
}

func nextStrings(n int) []string {
	ret := make([]string, n)
	for i := 0; i < n; i++ {
		ret[i] = next()
	}
	return ret
}
func main() {
	sc.Split(bufio.ScanLines)
	var n int = nextInt()
	var x = make([]string, n)
	for i := 0; i < n; i++ {
		x[i] = next()
	}

	var f = func(s string) []int {
		ss := strings.Split(s, " ")
		is := make([]int, len(ss)-1)
		for i, v := range ss {
			if i == 0 {
				continue
			}
			is[i-1], _ = strconv.Atoi(v)
		}
		return is
	}
	for j := 0; j < n; j++ {
		y := f(x[j])
		slices.Sort(y)
		slices.Reverse(y)
		yy := make([]string, len(y))
		for i, v := range y {
			yy[i] = strconv.Itoa(v)
		}
		fmt.Println(strings.Join(yy, " "))
	}

}