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Assumptions

Philological Assumption: Branches of the Tradition

1. Archaic group (possible Athonite protograph): 29, 1938, 109, Belovo
2. Bulgarian group: 100, 149, 433 (offshoot of Archaic group)
3. Mixed Balkan group (multiple protographs): 326, 738
4. Wallachian-Moldovian group (middle Bulgarian protograph): 213, 677, 740, 13225)

Technological Assumptions

• The significance of similarity depends on length
• Length-normalized clustering would be reliable because number of component texts is small