Ancestry Chart:
|
1 
2 and 3 Mating Yes
2 Father 4 and 5 Mating Yes
4 Grandfather 8 and 9 Mating Yes
8 Great-grandfather
5 Grandmother 10 and 11 Mating Yes
10 Great-grandfather
[=8 - Great-grandfather]11 Great-grandmother
3 Mother 6 and 7 Mating Yes
6 Grandfather 12 and 13 Mating Yes
12 Great-grandfather
[=4 - Grandfather]13 Great-grandmother
7 Grandmother 14 and 15 Mating Yes
