#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#define int long long
#define ll long long
#define pb push_back
#define fi first
#define se second
#define lf (id<<1)
#define rg ((id<<1)|1)
#define md ((l+r)>>1)
#define ld long double
using namespace std;
typedef pair<int,int> pii;
typedef pair<char,char> pcc;
typedef pair<int,pii> ipii;
typedef pair<pii,pii> ipiii;
const int MAXN = 3e5+10;
const int MAXA = 1e6;
const int INF = 1e18+10;
const int MOD = 1e9+7;
const int LOG = 32;
const ld EPS = 1e-12;
int n, m;
signed main(){
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
int T; cin >> T;
while(T--){
cin >> n >> m;
for(int i=1; i<=n; i++){
for(int j=1; j<=m/2+1; j++) cout << "+";
for(int j=m/2+2; j<=m; j++) cout << "-";
cout << '\n';
}
}
}
