#include<bits/stdc++.h>
using namespace std;
#define sz(v) (int)((v).size())
using ll=long long;
using i128=__int128_t;
const ll thres=(ll)(1e18)+10;
vector<ll> vC[70007];
inline ll C(int n,int k)
{
	k=min(k,n-k);
	return k>=sz(vC[n])?thres:vC[n][k];
}
inline ll mul(ll a,ll b)
{
	if(1.*a*b>thres) return thres;
	return a*b;
}
ll val[70007];
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	for(int i=1;i<70007;i++)
		val[i]=thres/i+(i!=1);
	for(int i=0;i<70007;i++)
	{
		vC[i].resize(min(30,i+1));
		vC[i][0]=1;
		for(int j=1;j<sz(vC[i]);j++)
			if(j==i)
				vC[i][j]=1;
			else
				vC[i][j]=min(thres,vC[i-1][j]+vC[i-1][j-1]);
	}
	int q;
	cin>>q;
	while(q--)
	{
		static int c[12];
		for(int i=0;i<10;i++)
			cin>>c[i];
		ll k;
		cin>>k;
		const ll mod=1e9+7;
		ll ans=0;
		int cur2=0;
		int sum=accumulate(c,c+10,0);
		ll ways=thres;
		while(sum--)
		{
			int tmp=sum+1;
			while(!c[cur2]) cur2++;
			int mx=0;
			for(int i=0;i<10;i++)
				mx=max(mx,c[i]);
			if(ways==thres&&sum-mx<=25)
			{
				if(mx>25)
				{
					int pos=0;
					for(int i=0;i<10;i++)
						if(c[i])
						{
							pos=i;
							break;
						}
					int l=0,r=c[pos];
					while(l<r)
					{
						int mid=(l+r)/2;
						ll tmp=1;
						int total=sum+1-c[pos]+mid;
						for(int i=0;i<10;i++)
						{
							int cur=(i==pos?mid:c[i]);
							tmp=mul(tmp,C(total,cur));
							total-=cur;
						}
						assert(!total);
						if(tmp<k)
							l=mid+1;
						else
							r=mid;
					}
					if(l!=c[pos])
					{
						ans=(ans*10+pos)%mod;
						c[pos]--;
						while(c[pos]!=l)
						{
							c[pos]--;
							sum--;
							ans=(ans*10+pos)%mod;
						}
						continue;
					}
				}
				ways=1;
				for(int i=cur2;i<9;i++)
				{
					ways=mul(ways,C(tmp,c[i]));
					if(ways>=thres) break;
					tmp-=c[i];
				}
			}
			else if(ways==thres)
			{
				c[cur2]--;
				ans=(ans*10+cur2)%mod;
				while(c[cur2]>30)
				{
					c[cur2]--;
					ans=(ans*10+cur2)%mod;
					sum--;
				}
				continue;
			}
			int cur=cur2;
			while(cur<10)
			{
				if(!c[cur])
				{
					cur++;
					continue;
				}
				ll ways2=(ways>=val[c[cur]]?thres:ways*c[cur]/(sum+1));
				if(ways2<k)
				{
					k-=ways2;
					cur++;
				}
				else
				{
					ways=ways2;
					break;
				}
			}
			ans=(ans*10+cur)%mod;
			c[cur]--;
		}
		cout<<ans<<'\n';
	}
	return 0;
}