Help with pattern

#1

With 38 sts on needle commencing in st st inc 1 st at both ends of 5th and:-
every following alternative 6th row until there are 58 st. Does this mean every 12th row?

#2

Hmm, I [I]think[/I] so, it sounds like it. but that means you’d have to work 120 rows and that doesn’t make sense. It may be every 6th row. What’s the pattern and what part are you doing, a sleeve?