vet1 = [1,2,5,6,9,10] #Primeiro vetor de seis elementos.
vet2 = [3,4,7,8,11,12] #Segundo vetor de seis elementos.
vet3 = []
#Para i variando no intervalo [0,6[ a cada 2 elementos...
for i in range(0,6,2):
vet3.append(vet1[i:i+2] + vet2[i:i+2]) #...concatena as fatias vet1[i:i+2] e vet2[i:i+2] em um único vetor e apensa a vet3.
print(vet3)
dmV0MSA9IFsxLDIsNSw2LDksMTBdICAgICNQcmltZWlybyB2ZXRvciBkZSBzZWlzIGVsZW1lbnRvcy4KdmV0MiA9IFszLDQsNyw4LDExLDEyXSAgICNTZWd1bmRvIHZldG9yIGRlIHNlaXMgZWxlbWVudG9zLgp2ZXQzID0gW10KCiNQYXJhIGkgdmFyaWFuZG8gbm8gaW50ZXJ2YWxvIFswLDZbIGEgY2FkYSAyIGVsZW1lbnRvcy4uLgpmb3IgaSBpbiByYW5nZSgwLDYsMik6ICAKICB2ZXQzLmFwcGVuZCh2ZXQxW2k6aSsyXSArIHZldDJbaTppKzJdKSAgICAjLi4uY29uY2F0ZW5hIGFzIGZhdGlhcyB2ZXQxW2k6aSsyXSBlIHZldDJbaTppKzJdIGVtIHVtIMO6bmljbyB2ZXRvciBlIGFwZW5zYSBhIHZldDMuIAogCnByaW50KHZldDMp
[[1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11, 12]]