I think you are a bit confused ... wash sale rules only come into play when you sell at a loss ... and you bought for 20 and sold for 22 so no loss incurred. Now if you sell the shares you bought at 30 for 30 then again you have no loss (or gain) the sale breaks even ( some call it a wash ... but this is not the same thing as wash sale rules). Even if you sold the stock at a loss now you would only trigger the loss sale rules if you buy the same stock again within 30 days of the sale.
Talk to your broker ... they keep track of these basis items for you automatically.
