The phrase "could neither be" is grammatically correct and commonly used in written English.
It is typically used as a comparison to suggest that something is equally true or false, or to suggest that something cannot happen because more than one thing is preventing it. For example: "The plan could neither be approved nor rejected due to the lack of information."
It could neither be accused of censorship nor irrelevance.
One was the terrorists, Basque, Maoist and neo-fascist, who could neither be conciliated nor legalised.
The experts were at the table but the department found itself dealing with people who could neither be corralled nor muzzled.
The painting could neither be defined according to "the drab world of naturalistic prose", nor its opposite, the universe of "absurd academic fictions".
Holland imposed themselves from the kick-off with the conviction of men who knew they could neither be forgiven nor forgive themselves if these circumstances went unexploited.
It was my second pregnancy that could neither be neatly tucked away into first trimester secrecy nor celebrated as a cute bundle of joy.
Einstein and Max Planck demonstrated once again that energy could neither be created nor lost and that it left one system only to join another — the famous law of conservation of energy.
But there is also something deeply sad and demoralizing about having in our collective possession such a vivid record of a death that could neither be prevented nor, in any immediate way, remedied.
Many were vengeful and their quests linear, but the best by far were inexplicable, elemental and feral creatures, peripheral horrors that were never fully glimpsed, and could neither be explained nor placated.
The worse performance in the group setting compared to the individual setting could neither be explained by exploration time, nor by time on task.
These increased caregiver costs of privately insured patients could neither be explained by the patients' visual acuity nor by a higher caregiver income.
