only significant factor
only significant predictor
only significant risk factor
only significant variable
only site
only slight
only slight changes
only slight differences
only small

only small amounts
only small changes
only small differences
only solution
only source
only sparse data
only species
only structure
only study
only successful

only suitable
only support
only symptom
only takes
only time
only trace amounts
only traces
only transient
only treatment
only true

only type
only used
only useful
only valid
only variable
only very
only visible
only way
only weak
only weak evidence

only weakly
only weakly dependent
only weakly positive
only weakly related