Among seven people F, G, H, K, L, M and N, each has a different age. Only two people are older than M. Only two people are younger than K. The age of K is a multiple of 10. The youngest is 12 years old. F is the eldest. N is older than L, but younger than H. L is not the youngest. The sum of the ages of the youngest and second oldest person is 42 years. What can be the possible age of L?