The word Calosan is misspelled against Callosan, an adjective meaning "the callosum."
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Callosan has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings ca & osan which should not be misspelled with single 'L'
Wrong Spelling:  ca-l-osan 
Correct Spelling:  ca-ll-osan 
Find more incorrect spellings of Callosan to spell right way.