After row 2 you would have 7, stitches, you start with 6 and increase by one in the first stitch then purl to the end.
Rows 3 through 6 are a repeat of row 1 and 2 - so on row 3 you would just knit (still 7 stitches), row 4 you would repeat row 2 and do an increase in the first, purl to end (now you have 8 stitches)... do that again for row 5 and 6 (8 and 9 stitches respectively).
Row 7 - knit, still 9 stitches... and row 8 is where you run into the problem. Is this word for word what the pattern says, because I imagine you must be told to cast on those additional 17 stitches at some point, but not only that
, there would appear to be an increase missing, because you can't purl 10 after the increase, as there is only 9 stitches... essentially as far as i can tell this line should read inc, p8
giving you the 9 stitches?? The rest of row 9 would be 'right' i suppose, if the numbers on row 8 were correct...
Not sure if i'm just not doing the math right, or if i'm just not getting it either?
Wish i could be of more help.