R,C,N=map(int,input().split())
L=[]
k=1
for i in range(R):
    Lt=[]
    for j in range(C):
        Lt.append(k)
        k+=1
    L.append(Lt)
for i in range(2,N+1):
    if i%2==0:
        for j in range(R):
            L[j].insert(0, L[j].pop())
    else:
        L.insert(0, L.pop())
for i in L:
    print(*i)