21 is one of the 6
Era is long period . 7 letters in total
15 & 36 are 2 that need to be disengaged.
Read alternate words of clue and it gives you two clues.
Solve these and then their answers are anagram ex to make a real word.
15 is a 3 letter and a 3 letter answer
First 3 letter begins with v
Second with an a
Then anagram to for word starting with a
36
Two 3 letter answes
First begins with n
Second with e
Then anagram to form word starting with n