from itertools import permutations
perm = set('g'+''.join(x)+'G' for x in permutations("bbbLLLLGGG"))
perm = [x for x in perm if not any (y in x for y in ["GL", "Lb", "bG"])]
print(len(perm))
perm = sorted(perm)
for i in range(len(perm)//4):
print(' '.join(perm[i + j*(len(perm)//4)] for j in range(4)))
ZnJvbSBpdGVydG9vbHMgaW1wb3J0IHBlcm11dGF0aW9ucwpwZXJtID0gc2V0KCdnJysnJy5qb2luKHgpKydHJyBmb3IgeCBpbiBwZXJtdXRhdGlvbnMoImJiYkxMTExHR0ciKSkKcGVybSA9IFt4IGZvciB4IGluIHBlcm0gaWYgbm90IGFueSAoeSBpbiB4IGZvciB5IGluIFsiR0wiLCAiTGIiLCAiYkciXSldCnByaW50KGxlbihwZXJtKSkKcGVybSA9IHNvcnRlZChwZXJtKQpmb3IgaSBpbiByYW5nZShsZW4ocGVybSkvLzQpOgogICAgcHJpbnQoJyAnLmpvaW4ocGVybVtpICsgaioobGVuKHBlcm0pLy80KV0gZm9yIGogaW4gcmFuZ2UoNCkpKQ==