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)
}

Python: def main():
    s = input()
    ans = list(input())
    s = reversed(s)
    for si in s:
        if si == "C":
            ans = ans[1:] + [ans[0]]
        if si == "J":
            ans = [ans[-1]] + ans[:-1]
        if si == "E":
            tmp = [ans[len(ans) // 2]] if len(ans) & 1 else []
            ans = ans[len(ans) // 2 + (len(ans) & 1):] + tmp + ans[: len(ans) // 2]
        if si == "A":
            ans = ans[::-1]
        if si == "M":
            for i in range(len(ans)):
                if ans[i].isdecimal():
                    ans[i] = int(ans[i])
                    ans[i] = str((ans[i] + 1) % 10)
        if si == "P":
            for i in range(len(ans)):
                if ans[i].isdecimal():
                    ans[i] = int(ans[i])
                    ans[i] = str((ans[i] - 1) % 10)

    print("".join(ans))



if __name__ == "__main__":
    for _ in range(int(input())):
        main()

Python: n = int(input())
for i in range(n):
    order = str(input())
    mes = str(input())
    l = len(mes)

    for p in reversed(order):
        if p == "J":
            mes = mes[-1] + mes[:-1]

        elif p == "C":
            mes = mes[1:] + mes[0]

        elif p == "E":
            if l % 2 == 0:
                mes = mes[l // 2:] + mes[:l // 2]
            else:
                mes = mes[(l + 1) // 2:] + mes[(l - 1) // 2] + mes[:(l - 1) // 2]

        elif p == "A":
            mes = mes[::-1]

        elif  p == "P":
            mes_li = list(mes)
            for itr, c in enumerate(mes_li):
                if c.isdigit():
                    mes_li[itr] = str((int(c) + 9) % 10)
            mes = "".join(mes_li)

        elif p == "M":
            mes_li = list(mes)
            for itr, c in enumerate(mes_li):
                if c.isdigit():
                    mes_li[itr] = str((int(c) + 1) % 10)
            mes = "".join(mes_li)

    print(mes)

Python: def J(m) :
    tmp = m[-1]
    del m[-1]
    m.insert(0, tmp)
    return m
    
def C(m) :
    tmp = m[0]
    del m[0]
    m.append(tmp)
    return m
    
def E(m) :
    if len(m) % 2 == 1 :
        x = len(m) // 2
        tmp = m[0:x]
        middle = m[x]
        del m[0:x+1]
        m = m + [middle] + tmp
        return m
    
    else :
        x = len(m) // 2
        tmp = m[0:x]
        del m[0:x]
        m = m + tmp
        return m
    
def A(m) :
    m.reverse()
    return m
    
def M(m) :
    for i in range(len(m)) :
        if '0' <= m[i] <= '8' :
            m[i] = str(int(m[i]) + 1)
        elif m[i] == '9' :
            m[i] = '0'
    return m
    
def P(m) :
    for i in range(len(m)) :
        if '1' <= m[i] <= '9' :
            m[i] = str(int(m[i]) - 1)
        elif m[i] == '0' :
            m[i] = '9'
    return m

n = int(input())
for i in range(n) :
    member = list(input())
    member.reverse()
    message = list(input())
    
    for j in range(len(member)) :
        if member[j] == 'J' :
            message = J(message)
        elif member[j] == 'C' :
            message = C(message)
        elif member[j] == 'E' :
            message = E(message)
        elif member[j] == 'A' :
            message = A(message)
        elif member[j] == 'P' :
            message = P(message)
        elif member[j] == 'M' :
            message = M(message)
    print(*message, sep='')

Python: funcs = {
    'J': lambda s: s[-1:]+s[:-1],
    'C': lambda s: s[1:]+s[0],
    'E': lambda s: s[(len(s)+1)//2:]+s[len(s)//2:(len(s)+1)//2]+s[:len(s)//2],
    'A': lambda s: s[::-1],
    'P': lambda s: s.translate(str.maketrans('0123456789', '9012345678')),
    'M': lambda s: s.translate(str.maketrans('0123456789', '1234567890')),
}
n = int(input())
for i in range(n):
    s, t = [input().strip() for j in '01']
    for c in s[::-1]:
        t = funcs[c](t)
    else:
        print(t)

Python: funcs = {
    'J': lambda s: s[-1:]+s[:-1],
    'C': lambda s: s[1:]+s[0],
    'E': lambda s: s[(len(s)+1)//2:]+s[len(s)//2:(len(s)+1)//2]+s[:len(s)//2],
    'A': lambda s: s[::-1],
    'P': lambda s: s.translate(str.maketrans('0123456789', '9012345678')),
    'M': lambda s: s.translate(str.maketrans('0123456789', '1234567890')),
}
n = int(input())
for i in range(n):
    s, t = [input().strip() for j in '01']
    for c in s[::-1]:
        t = funcs[c](t)
    else:
        print(t)