unimaginable

Pippa Johnston, deputy chief executive officer at Edinburgh Children's Hospital Charity, said Daniel and Kirsty had shown "so much courage and resilience in the face of such unimaginable hardship and uncertainty".

The level of insanity that surrounded them was unimaginable.

The study highlights how such texts offer insight not into the disease's route, but into how people of the time coped with unimaginable loss and upheaval.

The Taiwanese boats also have water cannon and a 20-millimetre static machine gun, but are careful to avoid a confrontation that "could lead to unimaginable consequences", Huang said.

Survivors who escaped the siege told the BBC they had encountered "unimaginable" suffering and witnessed fighters torturing men trying to flee.