Addition, Difficulty Level =2

$2^1=$	$5^1=$	$1^4=$	$7^4=$
$1^2=$	$5^2=$	$1^1=$	$1^3=$
$6^2=$	$1^1=$	$2^3=$	$2^2=$
$2^3=$	$1^2=$	$1^1=$	$4^1=$

---