Currently I just have to count how many corners I have to permute to see if I have a parity error. But yesterday I came across a pecuilar problem on my 8th solve where the UFR and UBR corners needed to be switched and also the FR and BR corners needed to be switched as well. I believed that I had fixed the parity already so is this just a matter of me forgetting to do one more edge in my cycle? Or is it a parity? My 7th solve was definetly a parity because I had a T-pattern at the end but this one I can't tell.