import sys

r1,r2 = map(int,raw_input().split())
c1,c2 = map(int,raw_input().split())
d1,d2 = map(int,raw_input().split())

for a in xrange(1,10):
    for b in xrange(1,10):
        if b!=a:
            for c in xrange(1,10):
                if c!=a and c!=b:
                    for d in xrange(1,10):
                        if d!=a and d!=b and d!=c:
                            if r1==a+b and r2==c+d and c1==a+c and c2==b+d and d1==a+d and d2==b+c:
                                print a,b
                                print c,d
                                sys.exit()

print "-1"
