What is the cash flows of years $0-4?$Blooper Industries

$\backslash$table$[[,$Year $0,1,2,3,4,5,6],[$Capital investment,$15,000,,,,,,],[$WC$,1,500,4,075,4,279,4,493,4,717,3,039,0],[$Change in WC$,1,500,2,575,204,214,225,-1,679,-3,039$