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#include <bits/stdc++.h>

using namespace std;

int board[501][501];
list<int> stream;

void print_stream()
{
    for (const int x: stream) {
      if(x==0)  cout << "G";
      if(x==1) cout << "P";
      if(x==2) cout << "D";
      if(x==3) cout << "L";
    }
    cout << '\n';
}

int typ(int x) {
    if(x==0 || x==2) return 1;
    return 2;
}

bool rule1(list<int>::iterator it) {
    list<int>::iterator tempit=it;
    ++it; bool applied=false;
    if(it!=stream.end()) {
        if(*tempit == *it) {
            stream.erase(it);
            applied=true;
        }
    }
    it=tempit;
    return applied;
}

bool rule2(list<int>::iterator &it) {
    list<int>::iterator tempit=it;
    ++it;
    if(it!=stream.end()) {
        if( typ(*tempit)==typ(*it) ) {
            stream.erase(tempit);
            return true;
        }
    }
    --it;
    return false;
}

bool rule3(list<int>::iterator it) {
    list<int>::iterator temp1=it;
    ++it;
    if(it!=stream.end()) {
        list<int>::iterator temp2=it; ++it;
        if(it!=stream.end()) {
            if((*temp1)==(*it) && (typ(*temp1)!=typ(*temp2))) {
               stream.erase(it);
               it=temp1;
               return true;
            }
        }
    }
    return false;
}

void print_board(int n, int m) {
    for(int i=0; i< n; i++) {
        for(int j=0; j<m; j++) {
            if(board[i][j]==0) printf(".");
            if(board[i][j]==1) printf("B");
            if(board[i][j]==2) printf("C");
        }
        printf("\n");
    }
}

void boardG(int n, int m) {
    for(int j=0; j<m; j++) {
        int free=0; while(free < n && board[free][j]!=0) free++;
        for(int i=0; i<n; i++) {
            if(board[i][j]!=0 && free < i) {
                board[free][j]=board[i][j];
                board[i][j]=0;
                ++free;
                while(free < n && board[free][j]!=0) free++;
            }
        }
    }
}

void boardD(int n, int m) {
    for(int j=0; j<m; j++) {
        int free=n-1; while(free >=0 && board[free][j]!=0) free--;
        for(int i=n-1; i >= 0; i--) {
            if(board[i][j]!=0 && free > i) {
                board[free][j]=board[i][j];
                board[i][j]=0;
                --free;
                while(free > -1 && board[free][j]!=0) free--;
            }
        }
    }
}

void boardL(int n, int m) {
    for(int i=0; i<n; i++) {
        int free=0; while(free < m && board[i][free]!=0) free++;
        for(int j=0; j<m; j++) {
            if(board[i][j]!=0 && free < j) {
                board[i][free]=board[i][j];
                board[i][j]=0;
                ++free;
                while(free < m && board[i][free]!=0) free++;
            }
        }
    }
}

void boardP(int n, int m) {
    for(int i=0; i<n; i++) {
        int free=m-1; while(free >=0 && board[i][free]!=0) free--;
        for(int j=m-1; j >= 0; j--) {
            if(board[i][j]!=0 && free > j) {
                board[i][free]=board[i][j];
                board[i][j]=0;
                --free;
                while(free > -1 && board[i][free]!=0) free--;
            }
        }
    }
}

int main() {
    int n,m; char a;
    scanf("%d", &n);
    scanf("%d", &m);

    for(int i=0; i<n; ++i){
       scanf("%c", &a);   // czytaj karetke
       for (int j = 0; j < m; j++) {
          scanf("%c", &a);
          if(a=='.') board[i][j]=0;
          if(a=='B') board[i][j]=1;
          if(a=='C') board[i][j]=2;
       }
    }
    int l;
    scanf("%d",&l); scanf("%c",&a);
    for(int i=0; i < l; ++i) {
        scanf("%c",&a);
        if(a=='G') stream.push_back(0);
        if(a=='P') stream.push_back(1);
        if(a=='D') stream.push_back(2);
        if(a=='L') stream.push_back(3);
    }

//    print_stream();

    list<int>::iterator it=stream.begin();

    while(it!=stream.end()) {
        while(rule1(it));
        ++it;
    }

//    print_stream();

    it=stream.begin();
    while(it!=stream.end()) {
        while(rule2(it));
        ++it;
    }

//    print_stream();

    it=stream.begin();
    while(it!=stream.end()) {
        while(rule3(it)) {
            list<int>::iterator tempit=it;
            ++it;
            if(!rule1(it)) rule2(it);
            it=tempit;
            if(it!=stream.begin()) --it;
        }
        ++it;
    }

//    printf("last stream:\n");
//    print_stream();
//    printf("\n");

    it=stream.begin();
    while(it!=stream.end()) {
        if((*it)==0) boardG(n,m);
        if((*it)==1) boardP(n,m);
        if((*it)==2) boardD(n,m);
        if((*it)==3) boardL(n,m);
        ++it;
    }

    print_board(n,m);
    return 0;
}