Mapping a smaller matrix to a larger matrix

I have a 4x4 matrix with indicies indicated around it (k). I want to map it to an 8x8 matrix based on thoes indicies to give me k'. See the image below for clarification. Is there a way to do it such that the indecies on the 4x4 matric and be any value from 1-8. For instance instead of 7812, use 4312 or 4378.

[Dyuman Joshi]

How are the indices given to you? Or how are these indices provided to the code as input?

[Jan]

A smarter example than only 1

K = [1,2,3,4; 5,6,7,8; 9,10,11,12; 13,14,15,16];
index1 = [7,8,1,2];
index2 = [7,8,1,2];

Answer 1

[Cameron]

k = ones(4);
kprime = zeros(8);
krow = [7 8 1 2];
kcol = [7; 8; 1; 2];
kprime(krow,kcol) = k;

Not sure where the k'(5,1) value came from or if you accidentally put a 1 there.

[Aaron DeSantis]

You are correct. The 1 at k(5,1) is an error and is supposed to be a zero.