p(10,15), pt(0,0.2)

positives
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36,53, 69 unused points at the crossing of two tracks
54 unused points in MTPC (a/p =101 %) 
85 unused points VT1(66%)
88 unused points VT1, two used points, nevertheless a/p=-1
96 split tracks, lot of unused points in VT2 !!!!

negatives
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8,13,16     like 36 pos
21 split