the coveted secret message

as a kid i loved getting the cereal boxes that had coded messages that i needed to reveal over a bowl of sugary delight. here's a secret message you don't want to miss out on. you're welcome.

_ _
23 5

_ _ _
1 18 5

_ _ _ _ _ _
8 1 22 9 14 7

_
1

_ _ _ _
2 1 2 25

_ _
15 14

_ _ _
13 1 25

_ _ _ _
a i 20 8


key:

1 : a
2 : b
3 : c
4 : d
5 : e
6 : f
7 : g
8 : h
9 : i
10 : j
11 : k
12 : l
13 : m
14 : n
15 : o
16 : p
17 : q
18 : r
19 : s
20 : t
21 : u
22 : v
23 : w
24 : x
25 : y
26 : z