The word Vialing is misspelled against Vialling, which is present continuous of "Vial"
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Vialling has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings via & ing which should not be misspelled with single 'L'
Wrong Spelling:  via-l-ing 
Correct Spelling:  via-ll-ing 
Find more wrongly spelled words of Vialling to spell it well.