Travelers often take freelance work in filling out Pokédex entries, which are written in a special markup language called PokéTeX, which supports regular and bolded text. However, Pokédex entries in the Johto region are written in MarkDunsparce, which also supports bolded text, but is formatted differently and thus incompatible with PokéTeX.
You are tasked with writing a translator program that formats MarkDunsparce entries into PokéTeX entries. In MarkDunsparce, bolded text is formed by **surrounding a phrase by two pairs of asterisks**. But in PokéTeX, bolded text is formed by \bf{beginning the phrase with "\bf" and surrounding it with curly braces}.
Your translator program will be given a string in valid MarkDunsparce format, and it must convert the bold phrases to PokéTeX format.
Every bolded phrase is surrounded by two pairs of asterisks, with $$$4$$$ asterisks per bolded phrase. Asterisks will only appear as part of valid bolded phrases – there are no lone asterisks – and there are no instances of four asterisks in a row without a character in between. Thus, inputs like **Mareep****Bayleef**, **Lugia***, or St*ryu will not be given. All bolded phrases will contain at least one non-space character, and are guaranteed to start and end with a non-space character. The text will not start nor end with a space.
The only line of input is one single MarkDunsparce string $$$M$$$: the line to translate to PokéTeX $$$(1 \le |M| \le 1000)$$$.
Output a single string: the input string translated into PokéTeX.
For clarity, sample input/output are on multiple lines in the printout, but each input and output is only one line.
**This species** was particularly treasured **in the old days**, as they would share **precious salt**.
\bf{This species} was particularly treasured \bf{in the old days}, as they would share \bf{precious salt}.
...it is what you do with **the gift of life** that determines who **you** are.
...it is what you do with \bf{the gift of life} that determines who \bf{you} are.
Th**is i**s not **t**he t**im**e to u**se t**hat.
Th\bf{is i}s not \bf{t}he t\bf{im}e to u\bf{se t}hat.
**Praise** **Helix**
\bf{Praise} \bf{Helix}
This species was particularly treasured in the old days, as they would share precious salt.
...it is what you do with the gift of life that determines who you are.
This is not the time to use that.
Praise Helix
