#include <bits/stdc++.h>
#define ll long long
#define int long long
#define lowbit(x) ((x)&(-x))
using namespace std;

const int maxn = 3100;

string S,T,str;
int sn,tn,n;
int gos[maxn][maxn],gose[maxn][maxn],got[maxn][maxn],gote[maxn][maxn];
int mnlen[maxn];
struct SAM
{
	int las,rt,tot;
	int par[maxn],len[maxn],ri[maxn];
	int son[maxn][28];
	
	int newnode(int L)
	{
		++tot;
		memset(son[tot],0,sizeof son[tot]);
		par[tot]=0;
		len[tot]=L;
		return tot;
	}
	void init()
	{
		tot=0;
		las=rt=newnode(0);
	}
	void extend(const int w,const int r)
	{
		int p=las;
		int np=newnode(len[p]+1); ri[np]=r;
		while(p && !son[p][w]) son[p][w]=np,p=par[p];
		
		if(!p) par[np]=rt;
		else
		{
			int q=son[p][w];
			if(len[q]==len[p]+1) par[np]=q;
			else
			{
				int nq=newnode(len[p]+1);
				
				memcpy(son[nq],son[q],sizeof son[nq]);
				par[nq]=par[q];
				
				par[np]=par[q]=nq;
				
				while(p&&son[p][w]==q) son[p][w]=nq,p=par[p];
			}
		}
		las=np;
	}
	vector<int>V[maxn];
	set<int>S[maxn];
	void dfs(const int x)
	{
		if(ri[x]) S[x].insert(ri[x]);
		
		for(auto y:V[x]) dfs(y);
		for(auto y:V[x])
		{
			if(S[x].size()<S[y].size()) swap(S[x],S[y]);
			
			for(auto it:S[y])
				S[x].insert(it);
		}
		
		for(int i=0;i<=sn;i++)
		{
			auto it= S[x].lower_bound(i+mnlen[x]);
			if(it==S[x].end() || *it>sn) gos[i][x]= -1;
			else gos[i][x]= *it;
			
			if(i+mnlen[x]<=sn)
			{
				it= S[x].find(sn);
				if(it!=S[x].end()) gose[i][x]=1;
			}
		}
		for(int i=0;i<=tn;i++)
		{
			auto it=S[x].lower_bound(sn+1+i+mnlen[x]);
			if(it==S[x].end()) got[i][x]= -1;
			else got[i][x]= (*it)-sn-1;
			
			if(i+mnlen[x]<=tn)
			{
				it= S[x].find(sn+1+tn);
				if(it!=S[x].end()) gote[i][x]=1;
			}
		}
	}
	void build()
	{
		for(int i=2;i<=tot;i++) 
		{
			V[par[i]].push_back(i);
			mnlen[i]= len[par[i]]+1;
		}
		dfs(rt);
	}
}tr;

int f[maxn][maxn];
tuple<int,int,int>g[maxn][maxn];

signed main()
{
	ios_base::sync_with_stdio(false); ////////////////////////////////////////
	cin.tie(0);
	
	cin>>S; sn=S.size();
	cin>>T; tn=T.size();
	
	str= S+(char)('z'+1)+T; n=str.size();
	
	tr.init();
	for(int i=0;i<n;i++) 
		tr.extend(str[i]-'a',i+1);
	tr.build();
	
	memset(f,-1,sizeof f);
	f[0][0]=0;
	for(int i=0;i<=sn;i++) for(int j=0;j<=tn;j++) if(f[i][j]!=-1)
	{
		for(int x=2;x<=tr.tot;x++) if(gos[i][x]!=-1)
		{
			if(tr.ri[x] && i==0)
			{
				int nexi=tr.ri[x], nexj=got[j][x];
				if(nexj==-1||nexj!=tr.ri[x]) nexj=tn+1;
				
				if(f[nexi][nexj]==-1 || f[nexi][nexj]>nexi)
				{
					f[nexi][nexj]=nexi;
					g[nexi][nexj]= make_tuple( i,j,nexi );
				}
			}
			
			int nexi=gos[i][x];
			int nexj= got[j][x]==-1?tn+1:got[j][x];
			
			int temp= f[i][j]+mnlen[x]+1;
			
			if( (f[nexi][nexj]==-1 || f[nexi][nexj]>temp) && nexi!=sn )
			{
				f[nexi][nexj]=temp;
				g[nexi][nexj]= make_tuple( i,j,mnlen[x] );
			}
			
			if(gose[i][x])
			{
				nexi=sn;
				if(gote[j][x]) nexj=tn;
				temp= f[i][j]+ mnlen[x]+1;
				if( f[nexi][nexj]==-1 || f[nexi][nexj]>temp )
				{
					f[nexi][nexj]=temp;
					g[nexi][nexj]= make_tuple( i,j,mnlen[x] );
				}
			}
		}
	}
	
	int ansi,ansj,ans=sn+1;
	for(int i=1;i<=sn;i++) if(f[i][tn+1]!=-1)
	{
		int j=tn+1;
		int tc= f[i][j]+ (i!=sn);
		if( tc<ans)
		{
			ans=tc;
			ansi=i;
			ansj=j;
		}
	}
	for(int j=0;j<=tn+1;j++) if(f[sn][j]!=-1 && j!=tn)
	{
		int i=sn;
		int tc= f[i][j];
		if( tc<ans)
		{
			ans=tc;
			ansi=i;
			ansj=j;
		}
	}
	
	if(ans==sn+1) 
	{
		return 0;
	}
	
	int i=ansi,j=ansj;
	vector<string>outp;
	
	if(i!=sn) outp.emplace_back("*");
	while(i!=0)
	{
		auto [pi,pj,len]= g[i][j];
		outp.push_back( S.substr(i-len+1-1,len) );
		if(pi+len!=i) outp.emplace_back("*");
		
		i=pi,j=pj;
	}
	//cerr<<ans<<endl;
	for(int k=(int)outp.size()-1;k>=0;k--) cout<<outp[k];
	cout<<endl;
	
	return 0;
}