I get it. Well I imagine most people do it as I think you’re talking about where they do A B A on Monday, Wednesday, Friday one week and then B A B the next week. The simplest way is probably just to extend the cycle so that it lasts longer than two weeks allowing for 6 increments. The two weeks per/micro-cycle is just a convenient way of organizing things not and actual principle or part of HST. Actually so are the number of increments which could be 4, 10, 12 spread over as many weeks as you can keep it going. It will make your cycle last a little longer but as long as each workout is a full body workout you will get the job done.
You could do it continuously if your schedule allows. So it would be A B A B A B so that you work out Monday, Wednesday, Friday, Sunday, Tuesday, Thursday, Saturday, Monday, Wednesday, Friday, Sunday. It’s not quite 6 of each every two weeks but it’s closer.
You could also what I did my first cycle which was ABABAB where I worked out Saturday, Sunday, Monday, Tuesday, Wednesday, Thursday with Friday off. That will get you 6 of each workout in two weeks.
Depending on your total volume you could even do something like what I’m doing now. Which is ABCABC going Saturday thru Thursday with Friday off. At the beginning of my cycle where I am now I’m doing full body workouts every day with a sort of Heavy/Medium/Light split based on a Leg/Pull/Push scheme. In other words I do a Heavy compound exercise for the specific body area on it’s day followed up by lighter isolation exercises on the following two days. That way each major body part, except legs, is getting hit every workout but only heavy once every three days. Other than that I’m incrementing all exercises normally but only twice a week.
I’m also using linier progression rather than 15s, 10s, 5s. As the weights increase and I’m finding I’m not recovering my strength to progress on my Heavy workouts I shift the isolation exercises so each body part gets a full day off. When it gets really Heavy I shift the isolation exercises again so that the whole routine becomes a standard Leg/Pull/Push routine with one day on and two days off for each major body part. I like doing it this way because I get better hypertrophy early in the cycle by working each body part every day and by the end I’m focusing more on strength gains so I can lift more weight in my compound lifts on the next cycle.
This post lays out how it works:
http://thinkmuscle.com/forum/showthread.php?39264-Grunt11-s-Training-Log&p=222478#post222478