8 lines
250 B
Plaintext

grand_parent1
parent1 (grand_parent1)
parent1-child1 (parent1 << grand_parent1)
parent1-child2 (parent1 << grand_parent1)
parent2 (grand_parent1)
parent2-child1 (parent2 << grand_parent1)
parent2-child2 (parent2 << grand_parent1)