Variants Dbuz\In(2)j-1, Dbuz\In(2)j-2, Dbuz\In(2)j-3, Dbuz\In(2)j-4, Dbuz\In(2)j-5, Dbuz\In(2)j-6, Dbuz\In(2)j-7, Dbuz\In(2)j-14, Dbuz\In(2)j-15, Dbuz\In(2)j-20, Dbuz\In(2)j-21 and Dbuz\In(2)jq⁷-4 have the same structure at the proximal breakpoint. Variants Dbuz\In(2)j-8, Dbuz\In(2)j-11, Dbuz\In(2)j-12, Dbuz\In(2)j-14, Dbuz\In(2)j-16, Dbuz\In(2)j-17, Dbuz\In(2)j-18, Dbuz\In(2)j-22, Dbuz\In(2)jz³-1, Dbuz\In(2)jz³-3 and Dbuz\In(2)jq⁷-4 have the same structure at the distal breakpoint.