```if-not:rust
Your task is to write a function `toLeetSpeak` that converts a regular english sentence to Leetspeak.
```
```if:rust
Your task is to write a function `to_leet_speak` that converts a regular english sentence to Leetspeak.
```

More about LeetSpeak You can read at wiki -> https://en.wikipedia.org/wiki/Leet

Consider only uppercase letters (no lowercase letters, no numbers) and spaces.

For example:

```if-not:rust
~~~
toLeetSpeak("LEET") returns "1337"
~~~
```
```if:rust
~~~
to_leet_speak("LEET") returns "1337"
~~~
```

In this kata we use a simple LeetSpeak dialect. Use this alphabet:

```
{
  A : '@',
  B : '8',
  C : '(',
  D : 'D',
  E : '3',
  F : 'F',
  G : '6',
  H : '#',
  I : '!',
  J : 'J',
  K : 'K',
  L : '1',
  M : 'M',
  N : 'N',
  O : '0',
  P : 'P',
  Q : 'Q',
  R : 'R',
  S : '$',
  T : '7',
  U : 'U',
  V : 'V',
  W : 'W',
  X : 'X',
  Y : 'Y',
  Z : '2'
}
```

```python

USER_FILENAME = "<user_code>"
import sys, json, builtins
import math, heapq, bisect, itertools, functools, collections, statistics, fractions, decimal, operator, array, random, re, string, os, pathlib
try:
    import resource as _res
except Exception:
    _res = None
from collections import Counter, defaultdict, deque, OrderedDict
from functools import lru_cache, reduce
from itertools import accumulate, permutations, combinations, product
from math import gcd, ceil, floor, sqrt
from decimal import Decimal
try:
    from typing import *
except Exception:
    pass
try:
    sys.setrecursionlimit(1_000_000)
except Exception:
    pass
try:
    import site as _site
    try:
        _sys_sites = _site.getsitepackages() if hasattr(_site, "getsitepackages") else []
        for _p in _sys_sites:
            if _p and _p not in sys.path:
                sys.path.append(_p)
    except Exception:
        pass
    try:
        _usp = _site.getusersitepackages()
        if isinstance(_usp, str):
            _usp = [_usp]
        for _p in _usp:
            if _p and _p not in sys.path:
                sys.path.append(_p)
    except Exception:
        pass
except Exception:
    pass

def _disabled_input(*args, **kwargs):
    raise RuntimeError("input() is disabled in callable mode")
builtins.input = _disabled_input

ns = {"__name__": "__judge__"}  # prevent if __name__ == "__main__" blocks
for _k, _v in list(globals().items()):
    if not _k.startswith("_"):
        ns[_k] = _v
_CODE = '\nd = {\n          \'A\': \'@\',\n          \'B\' : \'8\',\n          \'C\' : \'(\',\n          \'D\' : \'D\',\n          \'E\' : \'3\',\n          \'F\' : \'F\',\n          \'G\' : \'6\',\n          \'H\' : \'#\',\n          \'I\' : \'!\',\n          \'J\': \'J\',\n          \'K\' : \'K\',\n          \'L\' : \'1\',\n          \'M\' : \'M\',\n          \'N\' : \'N\',\n          \'O\' : \'0\',\n          \'P\' : \'P\',\n          \'Q\' : \'Q\',\n          \'R\' : \'R\',\n          \'S\' : \'$\',\n          \'T\' : \'7\',\n          \'U\' : \'U\',\n          \'V\' : \'V\',\n          \'W\' : \'W\',\n          \'X\' : \'X\',\n          \'Y\' : \'Y\',\n          \'Z\' : \'2\'\n}\n\ndef to_leet_speak(str):\n\n    a = []\n    \n    for i in range(len(str)):\n        \n        if str[i] in list(d.keys()):\n            \n            a.append(d[str[i]])\n              \n        else:\n            \n            a.append(str[i])\n                                   \n    p = "".join(a)\n\n    return p\n\n'
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

_target = None
_fn_name = 'to_leet_speak'
if _fn_name:
    if "Solution" in ns:
        try:
            _obj = ns["Solution"]()
            if hasattr(_obj, _fn_name):
                _target = getattr(_obj, _fn_name)
        except Exception:
            _target = None
    if _target is None and _fn_name in ns and callable(ns[_fn_name]):
        _target = ns[_fn_name]
# Fallback: if there's exactly one user-defined function, use it
if _target is None:
    _cands = [v for k, v in ns.items() if callable(v) and getattr(v, "__module__", "") in ("__judge__", "__main__")]
    _user_funcs = [c for c in _cands if getattr(c, "__name__", "").startswith("_") is False]
    if len(_user_funcs) == 1:
        _target = _user_funcs[0]
if _target is None:
    raise RuntimeError(f"Could not resolve callable '{_fn_name}'")

_raw = sys.stdin.read().strip()
if _raw:
    _parsed = json.loads(_raw)
    if isinstance(_parsed, dict):
        _kwargs = _parsed.get("kwargs", {})
        _args = _parsed.get("args", [])
    else:
        _args, _kwargs = _parsed, {}
else:
    _args, _kwargs = [], {}
if not isinstance(_args, (list, tuple)):
    _args = [_args]
_res = _target(*_args, **_kwargs)
try:
    sys.stdout.write(repr(_res) + "\n")
except Exception:
    pass

```

Measured memory_bytes: 5875