a) use three tables
b) use one table with all the datas

org table
db d11,d12,d13
db d21,d22,d23
...

Calculate the address:

mov b,#3
mov a,row
dec a
mul ab
'add the value of "table" and "col" to A and B'
mov dph,b
mov dpl,a
movx a,@dptr