alert appreciated appropriate-behavior appropriate-behaviour area black cigarettes communicating communication danger direction environment health health-risk no-smoking not-allowed not-permitted permission-denied pollution prohibited prohibition red sign symbols thanks unhealthy warning white accident alarm burn caution chemical device emergency equipment extinguish extinguisher fire fire extinguisher logo firefighter fireman flame foam handle hazard heat help logo object pictogram precaution protection rescue safe spray work black and white canine control controlled denial denied dog dogs-prohibited exception informing lead leash pets rules black-&-white gray grey greyscale clean clean-up cleanliness doggy-do droppings excrement excreta hygiene mess messy pickup poo prepared responsible sanitation waste announcement be-careful beware care careful cautionary cautionary-entrance-tape cautionary-tape Dirt discarded fallen ground lookout observant observe pedestrians plastic safety security tape watch watch-out yellow attention blue child conduct course drive guide happen highway industry kids law limit Look pedestrian people playground playing respect road school sidewalk slow street symbol teen traffic transportation walk way zone alternative-way arrow blocked blocked-path detour directing discoloration go-around message wording words directions instructions mother path roadsign woman beach black-and-white fine no-dogs penalty seashore unwelcome
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