Depends on direction of travel. If you go up you could have C D Eb E (first bar) then F E D F or even F G A Ab (second bar) then G G octave down A B (3rd bar) leading back to C (bar 4). There are so many different ways of walking your bass.

I tend to always play in my own bass lines as BIAB basses always produce awkward jumps and phrase leading. I think bass lines are incredibly important so I prefer to create my own. I play them in using a MIDI keyboard and edit any timing issues. I tend to use a good bass vst like Spectrasonics Trilian.

I always enjoy the bass line creation process.