package main

import . "fmt"
import . "strings"
import . "sort"

func main() {
c1:=[]string{"gray","brown","green","cyan","blue","yellow","orange","red"}
c2:=[]string{"gray","green","blue","yellow","red"}
c3:=[]string{"gray","green","cyan","blue","violet","orange","red"}
m:=map[string]int{}
for _,a:=range c1 {
	for _,b:=range c2 {
		for _,c:=range c3 {
			d:=[]string{a,b,c}
			Strings(d)
			m[Join(d,"")]++
		}
	}
}
var s1,s2,s3 string
Scan(&s1,&s2,&s3)
s:=[]string{s1,s2,s3}
Strings(s)
if m[Join(s,"")]==1 {
	Println("Yes")
} else {
	Println("No")
}
}