[FFmpeg-user] IVTC question (Telecined 12/24fps content)

[Nicholas Robbins]

I have some video (cartoons) it is "30" fps. 

Some of it appears to be fim->NTCS telecined (3 progressive frames, 2 "interlaced" frames)
Some of it appears to be actually 12fps doubled first and then telecined, with most frames duplicated, and the occasional frame "interlaced."
I would like to turn this into CFR progressive. Any suggestions about how to accomplish this?
I was thinking of doing one of  "-vf fieldmatch,decimate"  or   "-vf pullup,fps=24000/1001"  or "-vf pullup -r 24000/1001" 

Any suggestions or should I just try and see what works best?