The word Marowing is misspelled against Marrowing, which is present continuous of "Marrow"
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Marrowing has double "rr" is mispronounced as "r"
Remember double 'RR' in between the strings ma & owing which should not be misspelled with single 'R'
Wrong Spelling:  ma-r-owing 
Correct Spelling:  ma-rr-owing 
Find more incorrect spellings of Marrowing to spell right way.