Find set of sum in a number

findsum.js

function findSums(arr , num){
  let result = []
   arr.forEach((n , i) => {
     if(arr.includes(num - n , i)){
       result.push([n , num - n])
     }
   })
   return result
}



console.log(findSums([2, 1, 4,5,6,7,0,9,3,2 , 8] , 11))