Z has 5 rows and 7 columns. row 0: [0]=44, [4]=43, [6]=42, row 1: [3]=45, [4]=46, [6]=54, row 2: [1]=48, [5]=50, row 3: [0]=51, [3]=56, [5]=49, row 4: [0]=52, [4]=55, [6]=47, Number Check: 50 == 50? 47 == 47? 56 == 56? 55 == 55? Take a tour of the table: (2,1)=48 (2,5)=50 (3,5)=49 (3,3)=56 (1,3)=45 (1,4)=46 (1,6)=54 (4,6)=47 (4,4)=55 (4,0)=52 (3,0)=51 (0,0)=44 (0,4)=43 (0,6)=42 Take another tour of the table: (2,5)=50 (3,5)=49 (3,3)=56 (1,3)=45 Check some other functionality: (Should see 7 NULLS) NULL!!! NULL!!! NULL!!! NULL!!! NULL!!! NULL!!! NULL!!!