If you are going to teach your four year old to read then you might want to know about Dolch sight wordsThese are a good place to start. What letter combinations make the long O sound. Dolch Sight Word Worksheets Sight Word Worksheets Sight Words Dolch Words Long O Words Spelling. Sight words with the letter i . Two hundred twenty words have been identified as high frequency words and the list. Long O Words Spelling. Kids practice common long O spelling patterns in this interactive bus. Guide him through the mud by identifying sight words in this colorful interactive game with audio support for early readers.