QA output created by 638 Initial state ... one.d2 PMID: 2.1.2 one.one.d3 PMID: 3.1.3 one.one.one.keep4 PMID: 4.0.4 one.one.d6 PMID: 6.1.6 one.one.d7 PMID: 7.1.7 one.one.d8 PMID: 8.1.8 two.keep3 PMID: 3.0.3 two.d4 PMID: 4.1.4 two.d9 PMID: 9.1.9 three.one.d5 PMID: 5.1.5 keep1 PMID: 1.0.1 d1 PMID: 1.1.1 keep2 PMID: 2.0.2 Serial deletions ... 12 leaf nodes 11 leaf nodes 10 leaf nodes 9 leaf nodes 8 leaf nodes 7 leaf nodes 6 leaf nodes 5 leaf nodes 4 leaf nodes one.one.one.keep4 PMID: 4.0.4 two.keep3 PMID: 3.0.3 keep1 PMID: 1.0.1 keep2 PMID: 2.0.2 Parallel deletions ... 12 leaf nodes 11 leaf nodes 10 leaf nodes 9 leaf nodes 8 leaf nodes 7 leaf nodes 6 leaf nodes 5 leaf nodes 4 leaf nodes one.one.one.keep4 PMID: 4.0.4 two.keep3 PMID: 3.0.3 keep1 PMID: 1.0.1 keep2 PMID: 2.0.2