1301A - Three Strings - CodeForces Solution

t = int(input())
for i in range (t):
    a = input()
    b = input()
    c = input()
    j = 0
    for i in range (len(a)):
        if c[i]==b[i] or c[i]==a[i]:
            continue
        else:
            j = -1
            break
    if j==0:
        print("YES")
    else:
        print("NO")