I'm not familiar with that control and, without it in front of me or appropriate screenshots of available properties, methods, etc., I can't give you explicit instructions on how to do it. I have two theoretical ways that may work:
Using the VisibleRow count, do a for loop on visible row count. First thing in the loop should be a comparison of the top row to your desired string. Then use a keystroke to go down a row. Then loop that. I've done something similar in other controls and this has worked with some success.
Use a for loop to loop through all 33 rows. In the loop, for any given row, check to see if that row has a property that indicates visibility. If the row is not visible, do nothing. If it is, do your comparison.
These are JUST guesses... hopefully they'll point you in the correct direction.
Why automate? I do automated testing because there's only so much a human being can do and remain healthy. Sleep is a requirement. So, while people sleep, automation that I create does what I've described above in order to make sure that nothing gets past the final defense of the testing group. I love good food, good books, good friends, and good fun.