import sys


r1,r2=map(int,raw_input().split())
c1,c2=map(int,raw_input().split())
d1,d2=map(int,raw_input().split())
ok=False
for a in range(1,10):
    for b in range(1,10):
        for c in range (1,10):
            for d in range (1,10):
                if a+b==r1 and c+d==r2 and a+c==c1 and b+d==c2 and a+d==d1 and b+c==d2:
                    if a!=b and a!=c and a!=d and b!=c and b!=d and c!=d:
                        print a,b
                        print c,d
                        ok=True
                        break
    

if not ok:
    print -1