The word Puring is misspelled against Purring, which is present continuous of "Pur"
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Purring has double "rr" is mispronounced as "r"
Remember double 'RR' in between the strings pu & ing which should not be misspelled with single 'R'
Wrong Spelling:  pu-r-ing 
Correct Spelling:  pu-rr-ing 
Check more misspelled words of Purring to spell it correct.