A more detailed analysis shows that the two command modules for the instructions 'Load accumulator with content from address X' and 'Store accumulator in address X' differ in only one of the six steps. Therefore, the two modules can be combined, with only step 4 needing to be divided between two relays:

In LDAM micro-command 2 is switched on, in STAM it is microcommand 6. That is the only difference.