#include <bits/stdc++.h>
template <class t>
inline void read(t &s) {
  s = 0;
  register int f = 1;
  register char c = getchar();
  while (!isdigit(c)) {
    if (c == '-') f = -1;
    c = getchar();
  }
  while (isdigit(c)) s = (s << 3) + (s << 1) + (c ^ 48), c = getchar();
  s *= f;
  return;
}
template <class t, class... A>
inline void read(t &x, A &...a) {
  read(x);
  read(a...);
}
template <class t>
inline void write(t x) {
  if (x < 0) putchar('-'), x = -x;
  int buf[21], top = 0;
  while (x) buf[++top] = x % 10, x /= 10;
  if (!top) buf[++top] = 0;
  while (top) putchar(buf[top--] ^ '0');
  return;
}
inline void setIn(std::string s) {
  freopen(s.c_str(), "r", stdin);
  return;
}
inline void setOut(std::string s) {
  freopen(s.c_str(), "w", stdout);
  return;
}
inline void setIO(std::string s = "") {
  setIn(s + ".in");
  setOut(s + ".out");
  return;
}
template <class t>
inline bool ckmin(t &x, t y) {
  if (x > y) {
    x = y;
    return 1;
  }
  return 0;
}
template <class t>
inline bool ckmax(t &x, t y) {
  if (x < y) {
    x = y;
    return 1;
  }
  return 0;
}
inline int lowbit(int x) { return x & (-x); }
const int MaxN = 1e5 + 50;
char str[MaxN];
int f[MaxN][1 << 6], T[6], vis[MaxN];
inline bool check(int st) {
  for (int mask = 0; mask < (1 << 6); ++mask) {
    register int s = 0;
    for (int j = 0; j < 6; ++j)
      if (mask & (1 << j)) s += T[j];
    if (f[st][mask] < s) return false;
  }
  return true;
}
signed main(void) {
  std::scanf("%s", str);
  int n = std::strlen(str);
  for (int i = 0; i < n; ++i) ++T[str[i] - 'a'];
  int q;
  read(q);
  while (q--) {
    int x;
    std::string y;
    read(x);
    std::cin >> y;
    int msk = 0;
    for (auto i : y) msk |= (1 << (i - 'a'));
    vis[x] = msk;
  }
  for (int i = 1; i <= n; ++i)
    if (!vis[i]) vis[i] = (1 << 6) - 1;
  for (int i = n; i; --i)
    for (int j = 0; j < (1 << 6); ++j) f[i][j] = f[i + 1][j] + !!(j & vis[i]);
  if (!check(1)) return std::puts("Impossible"), 0;
  for (int i = 1; i <= n; ++i)
    for (int j = 0; j < 6; ++j)
      if (T[j] && (vis[i] & (1 << j))) {
        --T[j], str[i] = j + 'a';
        if (check(i + 1)) break;
        ++T[j];
      }
  std::puts(str + 1);
  return 0;
}
