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#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))
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