Model

   data
1 7 4 5
2 0 6 6
9 3 5 8

   0 1 2 ,R ¯1 +data
0 1 7 4 5
1 2 0 6 6
2 9 3 5 8

   (m l r)←⌽3⍴⌽¯1
   m
¯1
   l
¯1
   r
¯1

   l cells 0 1 2
0 1 2

   r cells data
 1 7 4 5  2 0 6 6  9 3 5 8

   disp r cells data
┌→──────┬───────┬───────┐
│1 7 4 5│2 0 6 6│9 3 5 8│
└~─────→┴~─────→┴~─────→┘

   l effrank 0 1 2
0
   r effrank data
1

   (l cells 0 1 2) ,¨ (r cells data)
 0 1 7 4 5  1 2 0 6 6  2 9 3 5 8 

   disp (l cells 0 1 2) ,¨ (r cells data)
┌→────────┬─────────┬─────────┐
│0 1 7 4 5│1 2 0 6 6│2 9 3 5 8│
└~───────→┴~───────→┴~───────→┘

   assemble (l cells 0 1 2) ,¨ (r cells data)
0 1 7 4 5
1 2 0 6 6
2 9 3 5 8

   0 1 2 ,R ¯1 +data
0 1 7 4 5
1 2 0 6 6
2 9 3 5 8