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#include <bits/stdc++.h>
#define all(vec) vec.begin(),vec.end()
#define PB push_back
#define PF push_front
#define EB emplace_back
#define EF emplace_front
#define EM emplace
#define FI first
#define SE second
#define pct __builtin_popcountll
#define ctz __builtin_ctzll
#define lson(o) (o<<1)
#define rson(o) (o<<1|1)
#define SZ(a) ((long long) a.size())
#define FOR(i, a, b) for (int i = (a); i <= (b); ++i)
#define ROF(i, a, b) for (int i = (a); i >= (b); --i)
#define debug(var) cerr << #var <<":"<<var<<"\n";
#define cend cerr<<"\n-----------\n"
#define fsp(x) fixed<<setprecision(x)
#define minn(vec) *min_element(vec.begin(),vec.end())
#define maxx(vec) *max_element(vec.begin(),vec.end())
using namespace std;
#ifdef LOCAL
template<typename T> void _print(T x) {
cerr << x;
}
template<typename T> void _print(vector<T> v) {
cerr << "[ ";
for (T i : v) _print(i), cerr << " ";
cerr << "]";
}
template<typename T> void _print(set<T> s) {
cerr << "{ ";
for (T i : s) _print(i), cerr << " ";
cerr << "}";
}
template<typename T, typename U> void _print(pair<T, U> p) {
cerr << "{";
_print(p.first);
cerr << ", ";
_print(p.second);
cerr << "}";
}
template<typename T, typename U> void _print(map<T, U> m) {
cerr << "{ ";
for (auto &p : m) _print(p), cerr << " ";
cerr << "}";
}
template<typename T> void _print(vector<vector<T >> v) {
cerr << "{\n"; for (auto i : v) _print(i), cerr << "\n"; cerr << " }";
}
#endif
using ll = long long;using ull = unsigned long long;
using DB=double;using LD=long double;
using pdd = pair<DB,DB>;using plb = pair<ll,bool>;
using pll = pair<ll,ll>;using vll=vector<ll>;using vb=vector<bool>;
using tll = tuple<ll,ll,ll>;using vii=vector<int>;
using vpll = vector<pll>;using vtll = vector<tll>;
using vdb = vector<DB>;using vc=vector<char>;
using arr3 = array<ll,3> ;using arr2 = array<ll,2>;
using CD=complex<double>;
static constexpr ll MAXN=(ll)1e6+10,INF=(ll)1e17+3;
static constexpr ll mod=(ll)1e9+7;
static constexpr double eps=1e-8;const double pi=acos(-1.0);
ll N,M,Q,X,K,T,lT;
inline void __();
signed main()
{
ios::sync_with_stdio(false);
cin.tie(0);cout.tie(0);
cin>>lT;
while(lT--)
__();
return 0;
}
inline void __(){
cin>>N;
string s;
cin>>s;
deque<ll> A;
vll wp;
FOR(i,1,N){
ll t=N;
if(s[i]=='1'){
t=i-1;
A.PB(t);
reverse(all(wp));
for(auto w:wp){
A.PB(w);
}
wp.clear();
}else{
t=i-1;
wp.PB(t);
}
}
FOR(i,0,SZ(wp)-1){
A.PB(N);
}
for(auto a:A){
cout<<a<<" ";
}
cout<<"\n";
}
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