set_ns(rosettacode);

add_clump(myClump)_row(a,b,c,d)_row(A,B,C,D,E,F)_row(-1,0,1,2,3);  // The default spread is presumed to be 'origin'
add_var(output,columnArray);

with_clump(myClump)_foreach()_bycol()_var(columnArray)
    with_var(output)_append()_flat([columnArray])_append(\n);
;

me_msg([output]);

reset_ns[];