It is known that the average of the following $$8$$ whole numbers, $$4$$, $$5$$, $$6$$, $$9$$, $$3$$, $$9$$, $$p$$, $$q$$ is $$6$$, and that the difference between the highest value and the lowest value is also $$6$$. Given that $$p\textless q$$, find the lowest possible value of $$q$$. 
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