Please solve the programming task below using a self-contained code snippet in a markdown code block.

Given a string s, return true if it is possible to split the string s into three non-empty palindromic substrings. Otherwise, return false.​​​​​
A string is said to be palindrome if it the same string when reversed.
 
Please complete the following python code precisely:
```python
class Solution:
    def checkPartitioning(self, s: str) -> bool:
```