>> 18, 10000
>> 13, 5000
tst3 size: 972
tst3 after, depth: 11, size: 486
tst3 size: 995
tst3 after, depth: 12, size: 497
tst3 size: 98
tst3 after, depth: 7, size: 49
tst3 size: 4869
tst3 after, depth: 15, size: 2434
tst3 size: 984
tst3 after, depth: 11, size: 492