The word Bestiring is misspelled against Bestirring, which is present continuous of "Bestir"
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Bestirring has double "rr" is mispronounced as "r"
Remember double 'RR' in between the strings besti & ing which should not be misspelled with single 'R'
Wrong Spelling:  besti-r-ing 
Correct Spelling:  besti-rr-ing 
Find more wrongly spelled words of Bestirring to spell it well.