A question about modern minor DDOs/DDRs......

Among the multitude of Lincoln DDOs and DDRs, the Minn DDR trees, and Ocean in view branches I frequently see a mention that hubbing process causes the doubling typically in center of design.
How did the 2005 bison and Ocean in View DDOs occur on the edge of lettering rather than center of designs??
How did the 2005 bison and Ocean in View DDOs occur on the edge of lettering rather than center of designs??
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