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<algorithm>
using namespace std;

string change(string mes, char o)
{
  if(o=='A')
    {
      reverse(mes.begin(),mes.end());      
    } 
  if(o=='J')
    {
      char tmp=mes[mes.size()-1];
      mes.erase(mes.size()-1);
      mes=tmp+mes;
    } 
  if(o=='M')
    {
      for(int i=0;i<mes.size();i++)
	{
 	  if(mes[i]>='0'&&mes[i]<='9')
	    {
	      if(mes[i]=='9')
		mes[i]='0';
	      else
		mes[i]++;
	    }
	}
    } 
 if(o=='P')
   {
     for(int i=0;i<mes.size();i++)
	{
 	  if(mes[i]>='0'&&mes[i]<='9')
	    {
	      if(mes[i]=='0')
		mes[i]='9';
	      else
		mes[i]--;
	    }
	}
   }
 if(o=='E')
   {
     int diff=(mes.size()/2.0)+0.9;
     for(int i=0;i<mes.size()/2;i++)
	{
	  swap(mes[i],mes[i+diff]);
	}
   }
 if(o=='C')
   {
      char tmp=mes[0];
      mes.erase(0,1);
      mes+=tmp;
   }
 
 return mes;
 
}

int main()
{
  int n;
  cin>>n;
  for(;n--;)
    {
      string order;
      string mes;
      cin>>order;
      cin>>mes;
      for(int i=order.size()-1;i>=0;i--)
	{
	  mes=change(mes,order[i]);
	}
      cout<<mes<<endl;
    }
  
}

C++: #include <cstdio>
#include <iostream>
#include <cmath>
#include <ctype.h>
#include <string> 
#include <sstream>
#include <iostream>
#include <algorithm>
#include <cstdlib>
#include <map>
#include <queue>
#include <utility>
#include <vector>

using namespace std;

void c_j(string str);
void c_c(string str);
void c_e(string str);
void c_a(string str);
void c_p(string str);
void c_m(string str);

int main()
{
	int n;
	string order, message;
	cin >> n;
	for(int i = 0; i < n; i++){
		cin >> order >> message;
		for(int j = order.length()-1; j >= 0; j++){
			if(order[j] == 'J') c_j(message);
			else if(order[j] == 'C') c_c(message);
			else if(order[j] == 'E') c_e(message);
			else if(order[j] == 'A') c_a(message);
			else if(order[j] == 'P') c_p(message);
			else if(order[j] == 'M') c_m(message); 
		}
		cout << message << endl;
	}
	return 0;
}

void c_j(string str)
{
	char c;
	c = str[str.length()-1];
	str.pop_back();
	str = c + str;
}

void c_c(string str)
{
	char c;
	c = str[0];
	str.erase(str.begin());
	str += c;
}

void c_e(string str)
{
	string a;
	int l = str.length();
	a = str.substr(0, l / 2);
	if( l % 2 == 1){
		char c = str[l / 2 + 1];
		str.erase(str.begin(), str.begin() + l);
		str += c;
		str += a;
	} else {
		str.erase(str.begin(), str.begin() + (l - 1));
		str += a;
	}
}

void c_a(string str)
{
	reverse(str.begin(), str.end());
}

void c_p(string str)
{
	for(int i = 0; i < str.length() - 1; i++){
		if(isdigit(str[i])){
			int n = str[i] - '0';
			n--;
			if(n == -1) n = 9;
			str[i] = n + '0';
		}
	}
}

void c_m(string str)
{
	for(int i = 0; i < str.length() - 1; i++){
		if(isdigit(str[i])){
			int n = str[i] - '0';
			n = (n + 1) % 10;
			str[i] = n + '0';
		}
	}
}

C++: #include <iostream>
#include <vector>
#include <algorithm>
#include <string>
 
using namespace std;

string invA( string s ){
	string ret;
	for(int i = s.length() - 1; i >= 0; i--)
		ret += s[i];
	return ret;
}
string invE( string s ) {
	int size = s.length();
	string ret;

	string div[3];
	div[0] = s.substr(0, size/2);
	div[1] = s.substr(size/2, size%2);
	div[2] = s.substr(size/2 + size % 2, string::npos);

	ret += div[2];
	ret += div[1];
	ret += div[0];

	return ret;
}
string invJ( string s ){
	int size = s.length();
	string ret;
	ret += s[size - 1]; 
	for(int i = 0; i < size - 1; i++)
		ret += s[i];
	return ret;
}
string invC( string s ){
	int size = s.length();
	string ret;
	for(int i = 1; i < size; i++)
		ret += s[i];
	ret += s[0];
	return ret;
}
string invM( string s ){
	int size = s.length();
	string ret;
	for(int i = 0; i < size; i++){
		if( s[i] < '0' || s[i] > '9' ) {
			ret += s[i];
		} else {
			if( s[i] == '9' ) {
				ret += '0';
			} else {
				ret += s[i] + 1;
			}
		}
	}
	return ret;
}
string invP( string s ){
	int size = s.length();
	string ret;
	for(int i = 0; i < size; i++){
		if( s[i] < '0' || s[i] > '9' ) {
			ret += s[i];
		} else {
			if( s[i] == '0' ) {
				ret += '9';
			} else {
				ret += s[i] - 1;
			}
		}
	}
	return ret;
}
string inv(string s, string o) {
	string ret;
	ret = s;
	for(int i = o.length() - 1; i >= 0; i--) {
		switch( o[i] ) {
		case 'A':
			ret = invA(ret);
			break;
		case 'E':
			ret = invE(ret);
			break;
		case 'J':
			ret = invJ(ret);
			break;
		case 'C':
			ret = invC(ret);
			break;
		case 'M':
			ret = invM(ret);
			break;
		case 'P':
			ret = invP(ret);
			break;
		}
	}
	return ret;
}
 
int main(void){
    //FILE* fp_in = freopen("data.txt", "r", stdin);

	int n;
	cin >> n;

	for(int i = 0; i < n; i++) {
		string s,o;
		cin >> o;
		cin >> s;
		cout << inv(s, o) << endl;
	}
 
   //while(1){}
 
   return 0;
}