Will you explain line-breeding?

There are two terms used by breeders to signify a particular dog appears in both the fathers and the mothers pedigree. Line-breeding and inbreeding.

When a dog is line-bred 3-3 on a dog (for example Grief), this means that Grief appears in the pedigree of the father and the mother of that particular dog. To get a 3-3 line breeding, you count the father as "1," the grandfather as "2" and the great grandfather as number "3." So a 3-3 line breeding to Grief means that Grief is the great grandfather on the sires side and the mothers side of a dogs pedigree.

In-breeding means that a father is bred to a daughter or a brother is bred to a sister. Inbreeding should only be attempted by the most experienced breeders. I tried it once and made the wrong decision on breeding partners.