tabl

a = int(input())
b = int(input())
c = int(input())
d = int(input())
jj=1

rr = []
rr.append(' ')
for i in range(c,d+1):
    rr.append(i)
for i in rr:
    print(i,end='\t')
oo=0
print()
kk=1
ll=1

for j in range(a,b+1):
    kk=1
    ll=1
    for i in range(len(rr)):
        print(j*kk,end='\t')
        kk=c-1
        if kk>=c-1:
            kk+=ll
            ll+=1
    print()