#include<bits/stdc++.h>
using namespace std;
int main()
{
	ios_base::sync_with_stdio(false);
	int T;
	cin>>T;
	while(T--)
	{
		int n,m;
		cin>>n>>m;
		string s;
		cin>>s;
		vector<pair<string,string>> ans;
		string A(n,'0'),B(m,'0');
		function<void(int,int,int)> dfs=[&](int x,int y,int p)
		{
			if(x==n)
			{
				if(p+0u==s.length())
					ans.emplace_back(A,B);
				return;
			}
			if(y==m)return dfs(x+1,0,p);
			if(x==0 and y==0)
			{
				for(A[x]='1';A[x]<='9';A[x]++)
				{
					for(B[y]='1';B[y]<='9';B[y]++)
					{
						int res=(A[x]-'0')*(B[y]-'0');
						if(res>=10)
						{
							if(s.length()<p+2u)continue;
							if(res/10==s[p]-'0' and res%10==s[p+1]-'0')
							{
								dfs(x,y+1,p+2);
							}
						}
						else
						{
							if(s.length()<p+1u)continue;
							if(res==s[p]-'0')
							{
								dfs(x,y+1,p+1);
							}
						}
					}
				}
			}
			else if(x==0)
			{
				for(B[y]='0';B[y]<='9';B[y]++)
				{
					int res=(A[x]-'0')*(B[y]-'0');
					if(res>=10)
					{
						if(s.length()<p+2u)continue;
						if(res/10==s[p]-'0' and res%10==s[p+1]-'0')
						{
							dfs(x,y+1,p+2);
						}
					}
					else
					{
						if(s.length()<p+1u)continue;
						if(res==s[p]-'0')
						{
							dfs(x,y+1,p+1);
						}
					}
				}
			}
			else if(y==0)
			{
				for(A[x]='0';A[x]<='9';A[x]++)
				{
					int res=(A[x]-'0')*(B[y]-'0');
					if(res>=10)
					{
						if(s.length()<p+2u)continue;
						if(res/10==s[p]-'0' and res%10==s[p+1]-'0')
						{
							dfs(x,y+1,p+2);
						}
					}
					else
					{
						if(s.length()<p+1u)continue;
						if(res==s[p]-'0')
						{
							dfs(x,y+1,p+1);
						}
					}
				}
			}
			else
			{
				int res=(A[x]-'0')*(B[y]-'0');
				if(res>=10)
				{
					if(s.length()<p+2u)return;
					if(res/10==s[p]-'0' and res%10==s[p+1]-'0')
					{
						dfs(x,y+1,p+2);
					}
				}
				else
				{
					if(s.length()<p+1u)return;
					if(res==s[p]-'0')
					{
						dfs(x,y+1,p+1);
					}
				}
			}
		};
		dfs(0,0,0);
		if(ans.size()==0u)cout<<"Impossible\n";
		else
		{
			auto [a,b]=*min_element(ans.begin(),ans.end());
			cout<<a<<' '<<b<<"\n";
		}
	}
	return 0;
}