alone consideration considerations contemplate entertain girl hestitate lake meditate molo nature peace pier ponder quay revolve think view water young advice alert announcement appropriate-behavior appropriate-behaviour aware awareness black care careful caution communicating communication considerate danger directions fence informing lettering letters red sign signs warning white wording words colors colours concern Dirt dirty encouragement garbage green recycle recycling reduce reuse rubbish unwanted waste waste-disposal waste-reduction disposal dispose blue color colored colour coloured responsible rubbish-reduction colorful colourful Bin cars dangerous listen lookout observant risk risks safety trams warning-sign waste-bin watch-out yellow limitations limited not-allowed not-permitted permission-denied prohibited prohibition allowed appreciated appreciation comments feedback information input opinions purple value valued welcome