package main

import . "fmt"
import . "strings"

func main() {
	var s string
	Scan(&s)
	b := []byte(s)
	
	for i, ch := range b {
		if ch == '.' {
			if i+1<len(b)&&b[i+1]=='K' {
				b[i] = 'K'
			} else {
				b[i] = 'S'
			}
		}
	}
	
	s = string(b)
	
	if Contains(s, "SKG") {
		Println("No")
	} else {
		Println("Yes")
		Println(s)
	}
	
}