The word Subasal is misspelled against Subbasal, an adjective meaning "Near the base."
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Subbasal has double "bb" is mispronounced as "b"
Remember double 'BB' in between the strings Su & asal which should not be misspelled with single 'B'
Wrong Spelling:  Su-b-asal 
Correct Spelling:  Su-bb-asal 
Check more misspelled words of Subbasal to spell it correct.