Reading entry from 0x1fdf280 ... 
4 entries stored in matrix at 0x1fdf4c0.
matrix at 0x1fdf4c0 ...
    1     8     7     1 
Reading entry from 0x1fdf280 ... 
5 entries stored in matrix at 0x1fdf620.
matrix at 0x1fdf620 ...
    1     8     7     5     6 
Reading entry from 0x1fdf280 ... 
6 entries stored in matrix at 0x1fdf7d0.
matrix at 0x1fdf7d0 ...
    1     8     7     6     7 
    9