The word Lobing is misspelled against Lobbing, which is present continuous of "Lob"
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Lobbing has double "bb" is mispronounced as "b"
Remember double 'BB' in between the strings Lo & ing which should not be misspelled with single 'B'
Wrong Spelling:  Lo-b-ing 
Correct Spelling:  Lo-bb-ing 
Find more incorrect spellings of Lobbing to spell right way.