The word Sylabi is misspelled against Syllabi, which is plural of "Syllabus"
-->
Syllabi has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings sy & abi which should not be misspelled with single 'L'
Wrong Spelling:  sy-l-abi 
Correct Spelling:  sy-ll-abi 
Find more wrongly spelled words of Syllabi to spell it well.