Some I use:
-Basic 1,2,1 (jab, cross,left hook)
-1,1,1 (Jab, left hook to the face, left body hook) Practiced just using my leading arm only to develop speed, snap and power doing multiple left hand techniques.)
-12,1 (Right overhand or cross, left uppercut/liver hook or shovel punch)
-1,2,1 (jab, Right leaping elbow, left liver hook. Was practicing this one yesterday, feels great to jump and lay into them with the elbow and then fire off a hook as you land near them)
-3, 1 (Left low kick, left liver hook)
-3,3,1 (Left low kick, switch-step and left knee to liver, left hand hook to liver or face. Cool combo when you get it fluid. The trick is bringing your foot all the way to the rear after landing the low kick and firing off the knee from there. The knee sets up a nice right hand or left hand technique).
1,2, sway liver hook. (Just a jab, cross, then duck a counter and slip to his exposed liver.)
The possibilites are endless. Just work on some combos that feel good and seem like they would work and then try em out sparring.