11.   These are valid concerns.

12.   They have valid concerns.

13.   This is a valid concern, but a way should be devised to permit an option allowing responsible adults to be treated as such.

14.   Walker said Horn and others have raised valid concerns, and he welcomes their guidance.

15.   Good therapists view this as a valid concern, not an insult.

16.   It is still not too late to take valid public concerns on board, to improve passenger-convenience for a change.

17.   These valid concerns point to a consolidating market, at best.

18.   But Reed upheld the original decision, saying it was based on valid concerns about discrimination and cultural sensitivity.