Select the option that represents the letters that, when placed from left to right in the following blanks, will complete the letter-series.
 F I R _ D F _ _ E D F _ T _ D F I _ E _

In a certain code language "GASTRIC" is written as "UCIREKT". How will "DECEIVE" be written in that code language?

In a certain code ROSE is written as @%$# and PREACH is written as *@#18&, then how can SEARCH be written in that code?

In a certain code language, GRAPH is written as HSBQI. How will ATTEMPT be written in the same code?

If TRIPPLE is coded as DMOQHSS in a code language, how is VICTORY coded in that language? 

In a certain code language, '587' is written as 'see good pictures', '539' is written as 'good and beautiful', and '967' is written as 'pictures are beautiful'. What is the code for the word 'see' in that language?

If PLUTO is coded PTULO, then how is EXIST coded? 

If VIRUS is coded WGUQX, then how is ELEMENT coded?