This means that the stallions appear twice in the forth generation of her pedigree.

This means that the stallion appears twice in the third generation of her pedigree.

This means that she occurs twice in the fourth generation of his pedigree.

This means that the mare appears twice in the third generation of his pedigree.

This means that Lorenzaccio appears in two separate place in the fourth generation of his pedigree.

This means that the stallion appears three times in the fourth generation of his pedigree.

They were inbred to Snake in the fourth generation (4m x 4f) of their pedigree.

He was inbred to Cade in the third and fourth generations of his pedigree.

This means that each of these horses appears twice in the fourth generation of his pedigree.

He was inbred to Adios in the third generation (3x3) of his pedigree.