thumb gusset

[alayna]

i have a question about a convertible mitten pattern im working on, could someone please clarify the instructions for the thumb gusset. after the first seven rows the instructions say "Continue in this manner, working the increases as
established every 3rd round 3 times more, then
every 4th round 2(3) times. 16(18) knit sts rem
between the two markers. Work 2 rounds even."

here is the link to the pattern. http://http://www.ravelry.com/patter...hilly-podsters