where is posibility of double vowels &double consonants write in the words
In general double consonants occur in English words in the following places:
1. After a stressed short vowel, especially when the letter following the two consonants is a vowel – as in rabbit, lettuce, skillet, cotton, sudden.
2. After a stressed short vowel when the next two letters are <le> at the end of a word – as in baffle, kettle, riddle, joggle, puddle.
3. At the juncture where a suffix with an initial vowel is added to a word that ends with a single vowel followed by a final single consonant – as in nabbed, wettest, bidder, boggy, strumming, which analyze to nab+b+ed], wet+t+est], bid+d+er], bog+g+y], strum+m+ing].
4. At the juncture where two elements come together, the first of which ends and the second of which begins with the same letter – as when
a. A prefix is added to a stem that starts with the same letter as that with which the prefix ends – as in addict, differ, innocent, dissolve, immediate, oppose, assort, attempt, subbasement.
b. A suffix is added to a stem that ends with the same letter as that with which the suffix starts – as in leanness.
c. At the juncture where two bases come together – as in lamppost, dumbbell, stepparent, midday.
In English the only vowels that are commonly doubled are <e> and <o>, as in beet and boot. Other double vowels are very rare in English and come from adoptions from other languages: aardvark, radii, vacuum.