#Uses python3

import sys
def getLCS3(a, b, c):
    l = len(c)
    m = len(b)
    n = len(a)
# https://www.ict.social/python/basics/multidimensional-lists-in-python
# The link above provides good tutorial for creating the 3-d list.
    D = []
    for _ in range(n + 1):
        x = []
        for _ in range(m + 1):
            y = []
            for _ in range(l + 1):
                y.append(0)
            x.append(y)
        D.append(x)
    
    for k in range(1, l + 1):
        for j in range(1, m + 1):
            for i in range(1, n + 1):
                if a[i - 1] == b[j - 1] == c[k - 1]:
                    D[i][j][k] = D[i - 1][j - 1][k - 1] + 1
                else:
                    D[i][j][k] = max(D[i - 1][j][k], D[i][j - 1][k], D[i][j][k - 1])

    return D[n][m][l]

if __name__ == '__main__':
    input = sys.stdin.read()
    data = list(map(int, input.split()))
    an = data[0]
    data = data[1:]
    a = data[:an]
    data = data[an:]
    bn = data[0]
    data = data[1:]
    b = data[:bn]
    data = data[bn:]
    cn = data[0]
    data = data[1:]
    c = data[:cn]
    print(getLCS3(a, b, c))