$ vmatch -dbcluster 30 50 -p -d -l 200 -e 10 atEST 
# args=-dbcluster 30 50 -p -d -l 200 -e 10 atEST
# 152 clusters
# 389 elements out of 1952 (19.93%) are in clusters
# 1563 elements out of 1952 (80.07%) are singlets
# 124 clusters of size 2
# 18 clusters of size 3
# 4 clusters of size 4
# 2 clusters of size 5
# 1 cluster of size 6
# 1 cluster of size 7
# 1 cluster of size 8
# 1 cluster of size 40
0:  1646 1862
1:  3 39 6
2:  1764 1896 1745 1767 1882
