The phrase "arrived perhaps" is correct and usable in written English.
It can be used when expressing uncertainty or speculation about the arrival of someone or something.
Example: "The package arrived perhaps a day later than expected."
Alternatives: "possibly arrived" or "might have arrived".
The Amarakaeri had once been a sizable warrior tribe, but, by the time I arrived, perhaps five hundred remained, living in rudimentary hamlets, where they survived by fishing with poison and by panning for gold.
Three years later, Kranz's breakout performance has finally arrived, perhaps at the perfect time.
Frankly, a lot of the sorts of incidents we've heard about over the past three days sound like things that have happened in the UK since people from former colonies first arrived, perhaps eager to have a look around the country that they'd been told was so great; that was responsible for dragging them from savagery to modernity.
With Christmas shows arriving, perhaps someone will take a lead.
The Colorado and Canyon will sit out the current model year, at least until more fuel-efficient and aerodynamic versions arrive, perhaps as 2014 models.
Our appetizers arrive perhaps five minutes after we order them, an example of an assembly-line quality that pervades the evening.
They remain on the payrolls of the real-estate developers who commissioned them, and will be in a position to design all or some of the buildings when the time to select architects arrives, perhaps a year from now.
In each, an eventual tutti arrives only after a sequence of exquisite and touching frustrated utterances -- and arrives perhaps as a failure, since frustration, under desperate conditions, is what the piece is about.
At least until the long-awaited urban light rail system arrives (perhaps in 2018), the capital Jakarta, in the west of the island, is a gridlocked mega-city that most people will want to avoid.
United Nations officials say the militias may be jockeying for power and trying to seize turf before the long-awaited hybrid force of United Nations and African Union peacekeepers begins to arrive, perhaps later this year.
At least two portrayed him in the act of ritually murdering the infant Britannia, and in one of these his great adversary, the liberal politician Gladstone, is the distressed mother, arriving perhaps too late to save her child.
