#1 set about v. begin to deal with; "approach a task"; "go about a difficult problem"; "approach a new project". wn
#2 set about v. enter upon an activity or enterprise. wn
#3 set about v. take the first step or steps in carrying out an action; "We began working at dawn"; "Who will start?"; "Get working as soon as the sun rises!"; "The first tourists began to arrive in Cambodia"; "He began early in the day"; "Let's get down to work now". wn
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