co-association run k=50 seed=21
  co-association run k=50 seed=22
  co-association run k=60 seed=21
  co-association run k=60 seed=22
  co-association run k=70 seed=21
  co-association run k=70 seed=22
  co-association run k=80 seed=21
  co-association run k=80 seed=22
  co-association run k=90 seed=21
  co-association run k=90 seed=22
  co-association run k=100 seed=21
  co-association run k=100 seed=22
dev: 40 clusters; prose cross-story baseline 0.5858; wrote signals-dev.json

real	2m49.256s
user	2m37.464s
sys	0m1.440s