Original 4 letter word
- Two consonants Two Vowels
All next words use the exact same 2 consonants and exact same 2 vowels. Order not important
Next word 5 letters
- Same 2 consonants same 2 vowels only
Next word 6 letters
- Same 2 consonants same 2 vowels only
Next word 8 letters
- Same 2 consonants same 2 vowels only
Next word 10 letters
- Same 2 consonants and same 2 vowels only
So all words only have same 2 consonants and same 2 vowels, nothing else. Of course starting with 5 letter words some of those will appear more than once.
All words contain the original 4 letter word, unbroken.
What are these words? No proper nouns or names please.