#include<iostream>
#include<algorithm>
#include<cstdio>
using namespace std;
#define same2(a,b) (c[a]==c[b])
#define same3(a,b,c) (same2(a,b)&&same2(b,c))
#define same4(a,b,c,d) (same3(a,b,c)&&same2(c,d))
int c[5];
bool four_card(){
if(same4(0,1,2,3)||same4(1,2,3,4)){
return 1;
}
return 0;
}
bool full_house(){
if((same3(0,1,2)&&same2(3,4)) || (same2(0,1)&&same3(2,3,4))){
return 1;
}else{
return 0;
}
}
bool straight(){
bool res=1;
for(int i=0;i<4;i++){
if((c[i]+1)!=c[i+1])res=0;
}
if((res==0) && (c[0]==1) && (c[1]==10)){
res=1;
for(int i=1;i<4;i++){
if((c[i]+1)!=c[i+1])res=0;
}
}
return res;
}
bool three_card(){
if(same3(0,1,2)||same3(1,2,3)||same3(2,3,4)){
return 1;
}else{
return 0;
}
}
bool two_pair(){
int p=0;
for(int i=0;i<4;i++){
if(same2(i,i+1)){
p++;
}
}
if(p==2){
return 1;
}else{
return 0;
}
}
bool one_pair(){
if(same2(0,1)||same2(1,2)||same2(2,3)||same2(3,4)){
return 1;
}else{
return 0;
}
}
int main(){
while(scanf("%d,%d,%d,%d,%d",&c[0],&c[1],&c[2],&c[3],&c[4])!=EOF){
sort(c,c+5);
if(four_card()){
cout<<"four card"<<endl;
}else if(full_house()){
cout<<"full house"<<endl;
}else if(straight()){
cout<<"straight"<<endl;
}else if(three_card()){
cout<<"three card"<<endl;
}else if(two_pair()){
cout<<"two pair"<<endl;
}else if(one_pair()){
cout<<"one pair"<<endl;
}else{
cout<<"null"<<endl;
}
}
}