What are 10 commonly 10 misspelled words?

The singular 'I' is always a Capital letter, irrespective of its position in a sentence. Too many people spell it as 'i' ; lower case. which is incorrect.

The use of the indefinite article 'a/an'

'a' is used when the noun begins with a consonent , except 'h'

'an' is used whern the noun begins with a vowel ( a,e,i,o,u) , and 'h'.

These are two very common spelling mistakes.