Here is another product for Reading and Spelling to Help You Out.
I give credit to Fry, Dolch, Seeing Stars, Webster Unabridged Dictionary, and Jolly Phonics to help me out in creating multisyllable words. I have not incorporated any special ruled words. Do not teach your child that K and W sounds before the word such as know and write because it will just confuse them. Just teach them the words.
I have put in words with prefixes and suffixes that can be utilized in their daily vocabulary. As an educator, you can have your student or child look up in the Dictionary to increase their vocabulary.
I know that you can use this tool and create more words to diversify their knowledge in the English language.