vlookup with random gaps in rows (hard to explain see attached sheet!)

Hi

I have a sheet (attached) where data is put into columns J, K, L and M. This is in sets which can vary from one to six rows and it is random as to how many rows each set will have. I need to transfer the values over to columns A, B, C and D but the problem is that A, B, C and D are fixed at six rows each in order to accommodate the maximum number of rows each set can have (I cannot change this). How do I get the data from J, K, L & M into A, B, C & D? I have tried various vlookups but it cannot account for the random placing of the gaps in the sets.

The sheet attached shows how it would look with the data transferred. Can anyone help with a suitable formula to do this please.