Walgreens stock has been a falling knife this year, but the company has levers it can pull on to strengthen its operations.Walgreens Boots Alliance (WBA -0.33%) is a highly risky stock to own right now. The pharmacy retailer has struggled with profitability, growing sales hasn't been easy, and its future is a big question mark at this point.This isn't going to be a suitable investment for most, given the risk involved. But if you're looking for a possible contrarian investment, below, I'll list the reasons ...