various densities
various depths
various designs
various developmental stages
various devices
various diagnostic

various diameters
various diets
various dimensions
various directions
various disciplines
various disease states
various diseases

various disorders
various distances
various domains
various doses
various drugs
various durations
various ecosystems

various effects
various efforts
various electrophiles
various elements
various environmental conditions
various environmental factors
various environmental stimuli

various environments
various enzymes