The word Lemas is misspelled against Lemmas, which is plural of "Lemma"
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Lemmas has double "mm" is mispronounced as "m"
Remember double 'MM' in between the strings le & as which should not be misspelled with single 'M'
Wrong Spelling:  le-m-as 
Correct Spelling:  le-mm-as 
Explore spell check of Lemmas to spell without errors.