// your code goes here
const obj={first:"William",second:"Ogbuji",seclast:"John",last:"Mercy"};
obj.last="Favour";
let text="";
for(x in obj)
{text +=obj[x]+","+" "};
console.log(text)
Ly8geW91ciBjb2RlIGdvZXMgaGVyZQpjb25zdCBvYmo9e2ZpcnN0OiJXaWxsaWFtIixzZWNvbmQ6Ik9nYnVqaSIsc2VjbGFzdDoiSm9obiIsbGFzdDoiTWVyY3kifTsKb2JqLmxhc3Q9IkZhdm91ciI7CmxldCB0ZXh0PSIiOwpmb3IoeCBpbiBvYmopCnt0ZXh0ICs9b2JqW3hdKyIsIisiICJ9OyAKY29uc29sZS5sb2codGV4dCk=