original conception
original configuration
original contribution
original data
original data set
original defect
original definition
original description
original design

original diagnosis
original equation
original equipment manufacturer
original form
original formulation
original graft
original graph
original group
original habitat
original image

original injury
original items
original level
original location
original material
original method
original model
original observation
original paper
original population

original position
original problem
original publications
original questionnaire
original report
original research articles
original research publications
original results
original sample
original scale

original sediment
original shape
original signal
original sin