Here's what I use...and I blatantly steal from other fighters

Jab, Jab (swat down guard), right cross.....from Wladimir Klitschko...works basically anywhere anytime

Left hook body, right hook body, left hook head (you can add a right uppercut in there if you like).....ala Mike Tyson, works best if your opponent is on the ropes and on the uppercut if you like to throw it, turn your body on the follow through of that last hook to give yourself a better angle.

Jab, Jab, left hook body, left hook head, right cross, left hook head

Left hook body, left hook body, left uppercut