#pragma GCC target("avx")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include<stdio.h>
#define mod 1000000007
void p(unsigned int* x,const unsigned int y){
  *x+=y;
  if(*x>=mod)*x-=mod;
}

unsigned int dp[2][10];
char* t="yukicoder";
char x,s[8];
int main(){
  gets(s,8);
  dp[0][0]=1;
  while(~(x=getchar())){
    if(x=='?'){
      for(unsigned int j=0;j<9;++j){
        p(&dp[1][j+1],dp[0][j]);
      }
    }else{
      for(unsigned int j=0;j<9;++j){
        if(x==t[j]){
          p(&dp[0][j+1],dp[0][j]);
          p(&dp[1][j+1],dp[1][j]);
        }
      }
    }
  }
  p(&dp[0][9],dp[1][9]);
  printf("%u\n",dp[0][9]);
}