The word Writen is misspelled against Written, which is past perfect of "Write"
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Written has double "tt" is mispronounced as "t"
Remember double 'TT' in between the strings wri & en which should not be misspelled with single 'T'
Wrong Spelling: wri-t-en
Correct Spelling: wri-tt-en
Find more wrongly spelled words of Written to spell it well.