#include<bits/stdc++.h>
using namespace std;
int n,a[10005];
int main()
{
	string opt;
	cin>>opt;
	if(opt[0]=='A')
	{
		string s;
		cin>>s;
		vector<int> ans;
		cin>>n;
		for(int i=1;i<=n;i++)
		{
			cin>>a[i];
		}
		int p=1;
		for(auto c:s)
		{
			c-='a';
			while(a[p]%27!=c) p++;
			int pp=p,cnt=12;
			while(cnt)
			{
				if(a[pp]%27==c) ans.emplace_back(a[pp]),cnt--;
				pp++;
			}
			p=pp,cnt=12;
			while(cnt)
			{
				if(a[pp]%27==26) ans.emplace_back(a[pp]),cnt--;
				pp++;
			}
			p=pp;
		}
		cout<<ans.size()<<"\n";
		for(auto i:ans) cout<<i<<" ";
	}
	else
	{
		cin>>n;
		bool fl=0;
		for(int i=1;i<=n;i++)
		{
			cin>>a[i];
			if(a[i]%27==26) fl=0;
			else if(!fl) putchar(a[i]%27+'a'),fl=1;
		}
	}
}