------
## 最终结论
```python
def start_withp(words):
    for phrase in words:
        word_list = phrase.split()
        p_words = [word for word in word_list if word.lower().startswith('p')]
        if len(p_words) >= 2:
            return (p_words[0], p_words[1])
    return None

# Test cases
assert start_withp(["Python PHP", "Java JavaScript", "c c++"]) == ('Python', 'PHP')
assert start_withp(["Python Programming","Java Programming"]) == ('Python','Programming')
assert start_withp(["Pqrst Pqr","qrstuv"]) == ('Pqrst','Pqr')
```