Since $$806\div 26=31$$, the $$806$$th letter Iwrite will be the last letter of the $$31$$st time I write the full alphabet; it will be a $$Z$$. 
If I write all $$26$$ letters of the English alphabet in alphabetical order $$62$$ times in a row, then the $$806$$th letter I write will be． 

a: $$A$$ 
b: $$E$$ 
c: $$V$$ 
d: $$Z$$ 