L=[[1,2,3],
[4,2,1],
[9,8,7]]
def recorrerColN(f,c):
m=[]
k=1
for i in range(f):
filas=[]
for j in range(c):
filas.append(k)
k+=1
m += [filas]
return m
print(recorrerColN(3,4))
TD1bWzEsMiwzXSwKICAgWzQsMiwxXSwKICAgWzksOCw3XV0KCmRlZiByZWNvcnJlckNvbE4oZixjKToKCW09W10KCWs9MQoJZm9yIGkgaW4gcmFuZ2UoZik6CgkJZmlsYXM9W10KCQlmb3IgaiBpbiByYW5nZShjKToKCQkJZmlsYXMuYXBwZW5kKGspCgkJCWsrPTEKCQltICs9IFtmaWxhc10KCXJldHVybiBtCgpwcmludChyZWNvcnJlckNvbE4oMyw0KSk=
[[1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11, 12]]