#include <iostream>
#include <string>
#include <cstring>
#include <cctype>
#include <cassert>
using namespace std;

char *table[] = {
  NULL, // 確定
  ".,!? ", "abc", "def" ,
  "ghi"  , "jkl", "mno" ,
  "pqrs" , "tuv", "wxyz",
};

// とてもstrictなルールを書いてみた
string decode(const string& s)
{
  string result;
  
  int cursor = 0;
  while(cursor < s.size()) {
    char c = s[cursor];
    
    if(! isdigit(c)) { // 数字でない
      cerr << "Non-digit character at idx=" << cursor << endl;
      assert(false);
    }
    if(c == '0') { // 文字が入力されていない状態で確定キー
      /*cerr << "Empty input at idx=" << cursor << endl;
      assert(false);*/
      // just ignoring 0
      cursor++;
      continue;
    }
    
    int next = s.find_first_not_of(c, cursor + 1);
    if(next == string::npos) next = s.size();
    if(next >= s.size() || s[next] != '0') { // 0 で確定されていない
      cerr << "Character sequence does not terminate with 0 at idx=" << next << endl;
      assert(false);
    }
    
    c -= '0';
    result += table[c][(next - cursor - 1) % strlen(table[c])];
    cursor = next + 1;
  }
  
  return result;
}

int main()
{
  int ncase;
  string s;
  cin >> ncase; getline(cin, s);
  while(ncase--) {
    getline(cin, s);
    cout << decode(s) << endl;
  }
  
  return 0;
}