4 x 50 (25 nbfr / 25 o-bk, e-br) on 2:00 3 x 50 (25 nbfr / 25 o-bk, e-br) on 2:30 5 x 50 (32 nbfr / 18 ez fr) on 3:00 200 slowmotion fr (1:15 pace) with snorkel