Ever since you started work at the grocer, you have been faithfully logging down each item and its category that passes through. One day, your boss walks in and asks, "Why are we just randomly placing the items everywhere? It's too difficult to find anything in this place!" Now's your chance to improve the system, impress your boss, and get that raise!

The input is a comma-separated list with category as the prefix in the form `"fruit_banana"`. Your task is to group each item into the 4 categories `Fruit, Meat, Other, Vegetable` and output a string with a category on each line followed by a sorted comma-separated list of items.

For example, given:

```
"fruit_banana,vegetable_carrot,fruit_apple,canned_sardines,drink_juice,fruit_orange"
```

output:

```
"fruit:apple,banana,orange\nmeat:\nother:juice,sardines\nvegetable:carrot"
```

Assume that:
1. Only strings of the format `category_item` will be passed in
2. Strings will always be in lower case
3. Input will not be empty
4. Category and/or item will not be empty
5. There will be no duplicate items
6. All categories may not have items

```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 = "def group_groceries(groceries):\n    categories = { 'fruit':[], 'meat':[], 'other':[], 'vegetable':[] }\n    for product in groceries.split(','):\n        key, value = product.split('_')\n        categories[key if key in categories else 'other'].append(value)\n    return '\\n'.join('{}:{}'.format(cat, ','.join(sorted(items))) for cat, items in categories.items())"
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

_target = None
_fn_name = 'group_groceries'
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: 7358