capture this data stream ?

see attached image,
I am trying to understand how to get the data from the second panel through a list or cull command.
after the explode I have data nicely organized so with list I can select/index 0,1 or and isolate groups of vertices etc... after the offset command the data is organized differently {0;0;0} {0;0;1} {0;0;2} and next is {0;1;0} {0;1;1} {0;1;2}  I need to isolate the x;x;0, x;x;1 andx;x;2 ( total 3 ) seperately... how do I do this, any ideas. it's driving me bonkers....