The phrase "allowed had" is not correct and usable in written English.
It appears to be a combination of two verbs that do not work together in standard English grammar.
Example: "He had allowed the mistake to happen."
Alternatives: "permitted" or "granted".
The men who took part in the few sports still allowed had to do so in long sleeves and trousers.
These awful dreams, he allowed, had nothing to do with the pursuit of pleasure and the release of tension that most dreams embodied.
If that happens, we could see new business arrangements, as well as products and services, that would not have been allowed had Hillary Clinton won the presidential election.
President George W. Bush declared a national emergency after the 9/11 terrorist attacks, but the spending it allowed had not been designated by Congress for other purposes.
At the end of the semester, students in the classrooms where electronics were allowed had performed substantially worse, with scores 0.2 standard deviations below those of the sections where electronics were banned.
Nkunda, he allowed, had been useful insofar as he had placed enormous pressure on Kabila "to feel that associating with us is much better and more profitable than associating with the F.D.L.R".
