label,start_bc,intermediate_bc,end_bc,first_span,second_span,total,state
Unshifted Gear-1 comparison,2456,,1016,,,1440,Gear 1 explicitly selected; 4 × 360 to schematic Nexus
Noah / Abraham partition,2516,2166,1016,350,1150,1500,Propagated +60 Gear-1 head; shifted Noah death shares normal Abraham-birth label
Shem partition,2516,2016,1016,500,1000,1500,"Propagated +60 Arphaxad boundary; 500 after Arphaxad, then 1000"