PROGRAMMING:Sweet fish

Although Tiantian is only in the third grade this year, she has learned C language. In order to celebrate her learning C language, her father took Tiantian to play games in the game hall, took her to travel to Maldives, bought an iponexxx for Tiantian, and charged her pesticide account number of king of Tiantian with 1000000000 RMB. Tiantian is very happy, so we know that Tiantian likes fish.
###Input format:
Each group of input four characters, there are multiple sets of data.
###Output format:
If the input is sweet favorite "fish", output "tiantianyu", otherwise output "yutiantian".
###Input example:
Here is a set of inputs. For example:
```in
fish
abcd
```
###Output example:
The corresponding output is given here. For example:
```out
tiantianyu
yutiantian
```







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