Write the following sets in roster form: 

(i) A = {x: x is an integer and –3 < x < 7}. 

(ii) B = {x: x is a natural number less than 6}. 

(iii) C = {x: x is a two-digit natural number such that the sum of its digits is 8}

(iv) D = {x: x is a prime number which is divisor of 60}. 

(v) E = The set of all letters in the word TRIGONOMETRY.

(vi) F = The set of all letters in the word BETTER. 

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