The destination value `MD` at [pongL.asm](https://github.com/nand2tetris/projects/blob/15188bfa204a9b01db6478ff08cd477b1953f655/06/pong/PongL.asm#L135) should be `DM`. If `MD` is allowed then `DA` and similarly `MAD` should also be allowed.
The destination value
MDat pongL.asm should beDM.If
MDis allowed thenDAand similarlyMADshould also be allowed.