If we have the following code:

$\{\begin{array}{c}\text{:}y=\left[\begin{array}{ccccccc}2& 46810& 12& 14& 16& 18& 20\end{array}\right]\text{;}\end{array}$

mywords $=$ 'Hello, how are you?$\text{'}$

What would the variable a be in the following:

$a=$ mywords$(12$:$14)$;

$a=$ mywords $(\left[\begin{array}{ccc}1& 2& 16\end{array}\right])$

$a=x(3$:$6)$

$a=x(8$:$10)+y(1$:$3)$