^^ Glad you asked. For Devil Jin his best basic combo is launch (either from WS+2 or EWGF) into f,f+3,1, d/f+1,2~f,f, f,N,d,D/F+4. If done fast enough the hellsweep is gauranteed.
Also after f,N,d,D/F+4(hellsweep), do 1+4, d/f+1,2~f,f, into another hellsweep. This only works if the hellsweep lands mid/close though. If it lands far away do either f,N,d,d/f+3 or a delayed hellsweep(do it at the end of the crouch dash motion by still holding D/F and waiting to input 4, you'll notice it's slower but does more damage).
After a wall stun with Devil Jin do 1,2, d+3+4.
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RR: Besides Kazuya, those are all really easy characters to learn, I'm sure you'll have no problem pickin' them up!