Insert a family

Решение:

1. Linda is the mom of Phineas and Ferb.
2. Lawrence is their dad.
3. Candace is Phineas's sister.
4. Phineas and Ferb are brothers.
5. Lawrence is Linda's wife.
6. Linda is Lawrence's husband.
7. Candace is Lawrence's daughter.
8. Phineas is Lawrence's son.
9. Ferb is Linda's step-son (but not biological son).
10. Candace is Ferb's step-sister.