The word Pebling is misspelled against Pebbling, which is present continuous of "Pebble"
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Pebbling has double "bb" is mispronounced as "b"
Remember double 'BB' in between the strings Pe & ling which should not be misspelled with single 'B'
Wrong Spelling:  Pe-b-ling 
Correct Spelling:  Pe-bb-ling 
Find more wrongly spelled words of Pebbling to spell it well.