``` import "fmt" import "strings" import "math" import "math/rand" words := strings.Fields("ink runs from the corners of my mouth") rand.Shuffle(len(words), func(i, j int) { words[i], words[j] = words[j], words[i] }) fmt.Println(words) ``` returns ```repl.go:4:1: package rand "math/rand" has no symbol Shuffle```