The phrase "are possibly lost" is correct and usable in written English.
It can be used when discussing the uncertainty of the status of something, indicating that there is a chance it may be lost.
Example: "The documents we sent last week are possibly lost in transit, and we may need to resend them."
Alternatives: "might be lost" or "could be missing".
What is clear, however, is that Del Bosque's existing crop are possibly losing the ability and hunger to execute their methods to the level that has brought them many accolades and admirers over the past six years.
Were publicists hesitant about having their clients be seen collecting goodies while their fans are possibly losing homes and jobs?
Although the irony was possibly lost on Clapton, the Odeon in Birmingham is on New Street, minutes from the Midland Hotel where eight years earlier Powell had made his infamous 'Rivers of Blood' speech.
Its famous emblem of a lion rolling a stone was an art deco-style fable of man inventing the wheel, even though the symbolism was possibly lost on later generations of petrol heads.
A sequel to this film, which is possibly lost, Pah Wongso Tersangka, was released later that year.
An ortholog of Pgo-SERA2 was possibly lost in a common ancestor of Asian Old World monkey parasites, after divergence from a common ancestor of African and Asian Old World monkey parasites.
Herd immunity was possibly lost because of a decline in vaccine-derived immunity, which was a result of a change in the vaccine composition.
This might be important for repeated skin contact, as these acids may be able to reduce any released Cr VI) (43), an ability that is possibly lost after long-term repeated exposure.
The plastid genome is likely retained primarily for lipid biosynthesis during seed production and is possibly lost completely in a single clade of outcrossing species whose life histories seem to accommodate a reduction in overall seed production.
