Quarters are numbered from the dexter chief (the corner nearest to the right shoulder of a man standing behind the shield), proceeding across the top row, and then across the next row and so on. When three coats are quartered, the first is repeated as the fourth; when only two coats are quartered, the second is also repeated as the third. The quarters of a personal coat of arms correspond to the ancestors from whom the bearer has inherited arms, normally in the same sequence as if the pedigree were laid out with the father's father's ... father (to as many generations as necessary) on the extreme left and the mother's mother's...mother on the extreme right. A few lineages have accumulated hundreds of quarters, though such a number is usually displayed only in documentary contexts. The Scottish and Spanish traditions resist allowing more than four quarters, preferring to subdivide one or more "grand quarters" into sub-quarters as needed.