Todays sets were: 8-9-10-11-12
I did: 8-9-10-11-10+(-2)

I failed to do the last set, only got 10 on it and finished the last two reps as negatives..

It will be interesting to see if I can do the first set of 13 in the next workout.. considering my last max was 10 pullups after week 3.