$(5\%)$ Write the output produced when the following method is passed each of the following lists:

public static void mystery$($ArrayList $$ Integer$>$ list$)\{$

for $($int $i=$ list.size $()-2$;$i>0$;$i--$

int $a=$ list.get $(i)$;

int $b=$ list.get $(i+1)$;

list.get $(i,a+b)$;

$\}$

System.out.println$($list$)$;

$\}$

$1,2,3,4,5,6$