The word Bestuding is misspelled against Bestudding, which is present continuous of "Bestud"
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Bestudding has double "dd" is mispronounced as "d"
Remember double 'DD' in between the strings Bestu & ing which should not be misspelled with single 'D'
Wrong Spelling:  Bestu-d-ing 
Correct Spelling:  Bestu-dd-ing 
Check more misspelled words of Bestudding to spell it correct.