Go: package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

func main() {
	io := NewIo()
	defer io.Flush()
	n := io.NextInt()
	for i := 0; i < n; i++ {
		s, t := io.NextLine(), io.NextLine()
		io.Println(f(s, t))
	}
}

func f(s, t string) string {
	for i := len(s) - 1; i >= 0; i-- {
		switch s[i] {
		case 'C':
			t = strings.Join([]string{t[1:], string(t[0])}, "")
		case 'J':
			t = strings.Join([]string{string(t[len(t)-1]), t[:len(t)-1]}, "")
		case 'E':
			if len(t)%2 == 1 {
				t = strings.Join([]string{t[len(t)/2+1:], string(t[len(t)/2]), t[:len(t)/2]}, "")
			} else {
				t = strings.Join([]string{t[len(t)/2:], t[:len(t)/2]}, "")
			}
		case 'A':
			r := []rune(t)
			for i, n := 0, len(r); i < n/2; i++ {
				r[i], r[n-i-1] = r[n-i-1], r[i]
			}
			t = string(r)
		case 'M':
			r := []rune(t)
			for i := 0; i < len(r); i++ {
				if '0' <= r[i] && r[i] < '9' {
					r[i]++
				} else if r[i] == '9' {
					r[i] = '0'
				}
			}
			t = string(r)
		case 'P':
			r := []rune(t)
			for i := 0; i < len(r); i++ {
				if '0' < r[i] && r[i] <= '9' {
					r[i]--
				} else if r[i] == '0' {
					r[i] = '9'
				}
			}
			t = string(r)
		}
	}
	return t
}

// I/O template
type Io struct {
	reader    *bufio.Reader
	writer    *bufio.Writer
	tokens    []string
	nextToken int
}

func NewIo() *Io {
	return &Io{
		reader: bufio.NewReader(os.Stdin),
		writer: bufio.NewWriter(os.Stdout),
	}
}

func (io *Io) Flush() {
	err := io.writer.Flush()
	if err != nil {
		panic(err)
	}
}

func (io *Io) NextLine() string {
	var buff []byte
	for {
		line, isPrefix, err := io.reader.ReadLine()
		if err != nil {
			panic(err)
		}
		buff = append(buff, line...)
		if !isPrefix {
			break
		}
	}
	return string(buff)
}

func (io *Io) Next() string {
	for io.nextToken >= len(io.tokens) {
		line := io.NextLine()
		io.tokens = strings.Fields(line)
		io.nextToken = 0
	}
	s := io.tokens[io.nextToken]
	io.nextToken++
	return s
}

func (io *Io) NextInt() int {
	i, err := strconv.Atoi(io.Next())
	if err != nil {
		panic(err)
	}
	return i
}

func (io *Io) NextFloat() float64 {
	i, err := strconv.ParseFloat(io.Next(), 64)
	if err != nil {
		panic(err)
	}
	return i
}

func (io *Io) Println(a ...interface{}) {
	fmt.Fprintln(io.writer, a...)
}

func (io *Io) Printf(format string, a ...interface{}) {
	fmt.Fprintf(io.writer, format, a...)
}

func (io *Io) PrintIntSlice(a []int) {
	b := make([]interface{}, 0, len(a))
	for _, x := range a {
		b = append(b, x)
	}
	io.Println(b...)
}

func (io *Io) PrintStringSlice(a []string) {
	b := make([]interface{}, 0, len(a))
	for _, x := range a {
		b = append(b, x)
	}
	io.Println(b...)
}

func Log(name string, value interface{}) {
	fmt.Fprintf(os.Stderr, "%s=%+v\n", name, value)
}

func ExampleIo() {
	io := NewIo()
	defer io.Flush()
	a := make([]int, 0, 3)
	a[0], a[1], a[2] = io.NextInt(), io.NextInt(), io.NextInt()
	io.Println(a)
	io.PrintIntSlice(a)
	Log("io", a)
}

C++: #include<iostream>
#include<string>
#include<vector>
#include<cstdio>
using namespace std;
int main(){
  int n;
  string x;
  string st;
  cin >>n;
  for(int i=0;i<n;i++){
    cin >> x;
    cin >> st;
    for(int j=x.size()-1;j>=0;j--){
      if(x[j]=='C'){
	char stock;
	stock = st[0];
	st.erase(st.begin());
	st+=stock;
      }
      else if(x[j]=='J'){
	char stock;
	stock = st[st.size()-1];
	//	cout << "p1"<<endl;
	st.erase(st.size()-1);
	//cout <<"p2"<<endl;
	st.insert(st.begin(),stock);
      }
      else if(x[j]=='E'){
	string stock;
	int l=st.size()/2;
	for(int k=0;k<l;k++){
	  stock+=st[k];
	}
	string stock2;
	int od = st.size()%2;
	for(int k=l+od;k<l*2+od;k++){
	  stock2+=st[k];
	}
	char st3;
	if(od==1)st3+=st[l];
	st=stock2+st3+stock;
      }
      else if(x[j]=='A'){
	string stock;
	for(int k=0;st.empty()!=true;k++){
	  stock += st[0];
	  st.erase(st.begin());
	}
	//cout << stock <<endl;
	for(int k=stock.size()-1;k>=0;k--){
	  st+=stock[k];
	}
      }
      else if(x[j]=='M'){
	for(int k=0;k<st.size();k++){
	  if(st[k]>='0'&&st[k]<'9'){
	    st[k]++;
	  }
	  else if(st[k]=='9'){
	    st[k]=='0';
	  }
	}
      }
      else if(x[j]=='P'){
	for(int k=0;k<st.size();k++){
	  if(st[k]>'0'&&st[k]<='9'){
	    st[k]--;
	  }
	  else if(st[k]=='0'){
	    st[k]=='9';
	  }
	}
      }	

      //cout <<"it is "<<x[j]<<endl;
      //cout << st << endl;
    }
    cout << st << endl;
  }
  return 0;
}

C++: #define _CRT_SECURE_NO_WARNINGS
#define _USE_MATH_DEFINES

#include "bits/stdc++.h"
#define REP(i,a,b) for(i=a;i<b;++i)
#define rep(i,n) REP(i,0,n)
#define ll long long
#define ull unsigned ll
typedef long double ld;
#define ALL(a) (a).begin(),(a).end()
#define ifnot(a) if(not a)
#define dump(x)  cerr << #x << " = " << (x) << endl
using namespace std;

void reader(int &a) { scanf("%d", &a); }
void reader(double &a) { scanf("%lf", &a); }
void reader(char a[]) { scanf("%s", a); }
void reader(char &a) { scanf(" %c", &a); }
void reader(ll &a) { scanf("%lld", &a); }
void reader(ull &a) { scanf("%llu", &a); }
// void reader(string& a){cin >> a;};
template<class T, class U> void reader(T& t, U& u) { reader(t); reader(u); }
template<class T, class U, class V> void reader(T& t, U& u, V& v) { reader(t); reader(u); reader(v); }

void writer(const int a, char c) { printf("%d", a); putchar(c); }
void writer(const ll a, char c) { printf("%lld", a); putchar(c); }
void writer(const ull a, char c) { printf("%llu", a); putchar(c); }
void writer(const double a, char c) { printf("%.20lf", a); putchar(c); }
void writer(const char a[]) { printf("%s", a); };
void writer(const char a[], char c) { printf("%s", a); putchar(c); };
void writer(const char a, char c) { putchar(a); putchar(c); };
template<class T> void writerLn(T t) { writer(t, '\n'); }
template<class T, class U> void writerLn(T t, U u) { writer(t, ' '); writer(u, '\n'); }
template<class T, class U, class V> void writerLn(T t, U u, V v) { writer(t, ' '); writer(u, ' '); writer(v, '\n'); }
template<class T> void writerArr(T x[], int n) { int i; if (!n) { putchar('\n'); return; }rep(i, n - 1) writer(x[i], ' '); writer(x[n - 1], '\n'); }
template<class T> void writerVec(vector<T> x) { int n = x.size(); int i; if (!n) { putchar('\n'); return; }rep(i, n - 1) writer(x[i], ' '); writer(x[n - 1], '\n'); }

vector<string> split(const string &str, char sep) { vector<string> v; stringstream ss(str); string buffer; while (getline(ss, buffer, sep)) { v.push_back(buffer); }return v; }
// #define int ll
bool test = 0;
int dx[] = { 0,1,0,-1 };
int dy[] = { 1,0,-1,0 };
#define INF (1 << 28)
ull mod = (int)1e9 + 7;
//.....................
#define MAX 22

int N, Q;

int W, H;

signed main(void)
{
	int i, j, k, l;
	int n;
	int loop;
	cin >> n;
	rep(loop, n) {
		string op;
		string input;
		cin >> op;
		cin >> input;
		int N = input.size();
		for (i = op.size() - 1; i > -1; --i) {
			if (op[i] == 'J') {
				char buf = input[N-1];
				for (j = N - 1; j > 0; --j) {
					input[j] = input[j - 1];
				}
				input[0] = buf;
			}
			if (op[i] == 'C') {
				char buf = input[0];
				rep(j, N-1) {
					input[j] = input[j + 1];
				}
				input[N - 1] = buf;
			}
			
			if (op[i] == 'E') {
				string buf = input.substr(N / 2 + N % 2);
				if (N % 2) {
					buf += input[N / 2];
				}
				buf += input.substr(0, N / 2);
				input = buf;
			}
			if (op[i] == 'A') {
				reverse(ALL(input));
			}
			if(op[i] == 'P') {
				rep(j, N) {
					if (isdigit(input[j])) {
						if (input[j] != '0') input[j] -= 1;
						else input[j] = '9';
					}
				}
			}
			if (op[i] == 'M') {
				rep(j, N) {
					if (isdigit(input[j])) {
						if (input[j] != '9') input[j] += 1;
						else input[j] = '0';
					}
				}
			}
			
 
		}
		cout << input << endl;
	}
	return 0;
}