Complete the last line in each of the following five series:

Puzzle 1:

"Using" is E

"Desist" is I

"Visits" is E

"Design" is ???

Puzzle 2:

"Asia" is H

"Cuffs" is S

"Ender" is I

"Redness" is F

"Fuchsia" is ???

Puzzle 3 (advanced):

"Pro-tem" and "row" are H

"Ties" is K

"Cohesion" is A

"Casino" is E

"Hocks" is either a word, name, ??? or ???

Puzzle 4:

"Gross" is W or R

"Assign" is S

"Amassing" is E

"Design" is S

"Amassing" is S

"Arrows" is ??? or ???

Puzzle 5:

"Edna" is I

"Slang" is X

"Siege" is E

"Basin" is X

"Sin" is X

"Sin" is A

"Besiege" is X

"Signals" is ??? and ???

Each "puzzle" is a palindrome. For example, the sentence "using is e desist is i visits is e design is ???" should be the same read from left to right and from right to left. Therefore the missing letters are:

"U", "A", "T" or "P", "S" or "G", "I" and "E".