Sure, I'm happy to help you with some examples of parser combinators. Parser combinators are a way of building complex parsers from simpler ones, using functions that combine parsers together. They are often used to parse structured text, such as JSON, XML, HTML, or programming languages.

For example, suppose we have the following parsers:

- `char(c)` is a parser that matches a single character `c`.
- `digit` is a parser that matches a single digit from `0` to `9`.
- `letter` is a parser that matches a single letter from `A` to `Z` or `a` to `z`.

We can use parser combinators to create more complex parsers from these basic ones. For example:

- `char('+') >> digit >> digit` is a parser that matches a plus sign followed by two digits, such as `+31`.
- `digit.repeat(3)` is a parser that matches three digits in a row, such as `105`.
- `(letter | digit).repeat(1)` is a parser that matches one or more letters or digits, such as `abc`, `42`, or `a1b2`.

These are just some examples of how parser combinators can be used to combine parsers and create new parsers. There are many more possible combinations and variations, depending on the syntax and semantics of the language or format we want to parse. 

One real-world example of a parser combinator library in Python is [parsy](https://github.com/python-parsy/parsy), which allows you to create parsers using operators like `+` for concatenation, `|` for alternation, and `>>` for transformation. For instance, here is a simple parser that parses a __JSON string__:

```python
from parsy import string, regex

# A JSON string is a double-quoted sequence of characters
json_string = string('"') >> regex(r'[^"]*') << string('"')

# Test the parser on some inputs
print(json_string.parse('"hello"')) # hello
print(json_string.parse('"world"')) # world
print(json_string.parse('""')) # (empty string)
print(json_string.parse('"foo"bar"')) # raises ParseError
```

Here is a simple parser that parses a list of __comma-separated integers__:

```python
from parsy import string, regex

# An integer is an optional sign followed by one or more digits
integer = regex(r'[-+]?\d+').parsecmap(int)

# A list of integers is zero or more integers separated by commas
integer_list = integer.sep_by(string(','))

# Test the parser on some inputs
print(integer_list.parse('1,2,3')) # [1, 2, 3]
print(integer_list.parse('-42')) # [-42]
print(integer_list.parse('')) # []
print(integer_list.parse('1,2,x')) # raises ParseError
```

I hope these examples give you some idea of how parser combinators work.
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