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['H','a','p','p','y','b','i','r','t','h','d','a','y']
[H,a,p,p,y,b,i,r,t,h,d,a,y]
['H','a','p','p','y',' ','b','i','r','t','h','d','a','y']
[H,a,p,p,y, ,b,i,r,t,h,d,a,y]