The phrase "allows perfectly" is correct and usable in written English.
It can be used to indicate that something enables or permits an action to be done without any issues or flaws.
Example: "The new software update allows perfectly for seamless integration with existing systems."
Alternatives: "enables flawlessly" or "permits without issues."
Greens are suspicious of any efforts to remove trees from national forests not least because the Forest Service has often allowed perfectly healthy trees to be logged in the guise of aiding forest health.
PET/MR imaging allows for perfectly registered attenuation maps, clinically important complementary MR information, and potentially superior motion correction.
The specific chemical reactivity of C60 leads in both cases to a peculiar addition mechanism that allows to perfectly control the number of arms between 2 and 6.
Mind you, even Cohn could not have predicted the climatic delights of Gilliam's desert location, which in the space of a lunch break allows a perfectly nice day to mutate into a primeval hailstorm that buries half the equipment in a mudslide.
Right after each disaggregation, the accounts of the SAM are balanced, using information from local experts on which values are to be trusted in the case of major imbalances, and with the use of a cross-entropy technique that allows to perfectly balance the accounts while keeping the information on the SAM consistent with macro figures publicly available for the country.
This treatment modality allows a perfectly quantifiable evaluation of the chemosensitivity or chemoresistance of any treated case.
Error correcting codes can correct those errors and allow to perfectly recover the digital information.
The White House's silence over the CNOOC acquisition allowed a perfectly reasonable commercial deal to collapse for misplaced political reasons.
He argues that the domain specificity and encapsulation of a mechanism and its innateness pull apart quite clearly, allowing for "perfectly general learning mechanisms" that are innate and "fully encapsulated mechanisms" that are single stimulus specific and everything in between.
Shortly after the invention of movable type, highly variable spacing was created that could create spaces of any size, and allowed for perfectly even justification.
