The word Postiling is misspelled against Postilling, which is present continuous of "Postil"
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Postilling has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings posti & ing which should not be misspelled with single 'L'
Wrong Spelling: posti-l-ing
Correct Spelling: posti-ll-ing
Find more incorrect spellings of Postilling to spell right way.