Could you help with the last few clues, please. 12acPipes in house satisfactory (a hiss is eliminated) (7ltrs) h-o-a-s I want to put "hookahs" but not sure why. Also 50dn Offender executed in secret (5ltrs) i-n-r (INNER??) 25ac Help - solent is treacherous stretch of water! (10 ltrs) -e-l-s-o-t Many thanks. Four Clubs