package main

import (
	"fmt"
)

func main() {
	var N int
	fmt.Scan(&N)
	p := make([]bool, 10)
	for i, _ := range p {
		p[i] = true
	}
	for i := 0; i < N; i++ {
		var a, b, c, d int
		var r string
		fmt.Scan(&a, &b, &c, &d, &r)
		switch r {
		case "YES":
			for j, _ := range p {
				if j == a || j == b || j == c || j == d {
					continue
				}
				p[j] = false
			}
		case "NO":
			p[a] = false
			p[b] = false
			p[c] = false
			p[d] = false
		}
	}
	for i, v := range p {
		if v {
			fmt.Println(i)
		}
	}
}