V1: k=100 seed=15: 59 candidates, sampled 30
V2: k=40 seed=14: 32 candidates, sampled 30
V3: k=60 seed=16: 46 candidates, G2 accepts 13; growth stopped by gate 2, by cap 11
blind sheet: 73 clusters, 1600 lines

real	0m39.098s
user	0m37.786s
sys	0m1.160s