dynamic index match formula to transpose values across rows and then down columns

Hello all. So I have a very tricky formula that I just can't seem to get; I'm a bit of a dabbler in excel and am afraid I just don't have what it takes to figure this one out.

I've attached a file, & here's what I need it to do:
Depending on which value (0-14, located in a2:a16) I input into k1, transpose the numbers from the matrix a1:g29 into K2:K34, reading across the rows, and then down from the last position in g. It's a bit confusing,so I tried to highlight the direction in which i want it to read, but column g will read down from different numbers. I put examples of what I would want 0 as the input to read like in L2, and what 1 as the input should read like in M2. I understand that the number of rows would be less for higher numbers input into k1, so I also have an iferror added in there. I've got the first cell formula correct in k2, but that's all I can get. If anyone can help it would be so appreciated! Thanks for looking!

~Laura