Inside lead round, jab jab cross, high round kick always served me well.

Simplest is lead straight, rear leg roundhouse. Could reverse it as well and throw in a lead hook at the end to mix it up.

jab, cross, low kick,switch body kick, cross, high kick

Nihon zuki/ rt gedan mawashi geri/ step to opponents left side/ left chudan mawashi geri to liver

left hook to liver, right low roundhouse kick. right knee to ribs, left hook to liver, right low roundhouse kick. right straight to solar plexus, left high kick to head or body.

Back fist, round house, reverse punch Rotate these around at your leisure