[Level 1] Find the difference:
S
O
L
U
T
I
O
N
:
[Level 2] Find the difference:
S
O
L
U
T
I
O
N
:
[Level 3] Find the difference:
S
O
L
U
T
I
O
N
:
[Level 4] Find the difference:
S
O
L
U
T
I
O
N
:
[Level 5] Find the difference:
S
O
L
U
T
I
O
N
: