Your mind raced with hormone-induced ideas of what your could do with all these options. Figuring that it was only temporary anyway, you decided to have fun and select options liberally for modifying one of your girlfriend-bodies. Omitting the options you left blank, the settings looked like this when you were done:
Fingers: 7
Toes: 7
Tongues: 3
--> Tongue length (ft): 4
Clitori: 2
Breasts: 6
-->Nipples type (row 1) (nipple, vagina, penis, mouth): mouth
-->Nipples type (row 2) (nipple, vagina, penis, mouth): vagina
-->Nipples type (row 3) (nipple, vagina, penis, mouth): penis
Arms: 8
Legs: 4
--> Leg arrangement (taur, adjacent, stacked): adjacent
Penises: 3
Vaginas: 3
Heads: 3
Upper bodies: 3
You weren't entirely sure how the result would come out, as certain options lacked descriptions. You assumed that "adjacent" meant the extra legs would all be side-by-side, and you were curious how the machine would react to having both male and female genitalia specified, or how it would handle the extra crotches that having 4 legs would presumably create. Hitting ENTER and answering the confirmation prompt, you watched as the main chamber's doors closed on your female body inside.
Closing your eyes, nothing could prepare you for the massive wave of pleasure that washed over you as the machine began altering your body inside the machine. You repeatedly felt as if you were going to orgasm, but something prevented you from reaching your peak as the machine did its work. After what felt like an eternity (but was really only a few minutes), the machine powered down and the main doors opened once again. Opening your eyes, you were unprepared for the bizarre experience of seeing the same view from nine slightly different perspectives at once, not counting your two bodies by the terminal.
As your newly modified female body carefully walked out of the machine on your four legs, you got a good view of yourself with your other two bodies. Initially, you entered 3 heads thinking there would be one for each of the three upper bodies you specified, but it appeared that the upper body macro instead applied all the previous settings to *each* of them, giving you three heads on each torso for a total of nine. Additionally, your assumption about the "adjacent" option for legs was correct, and you had four legs side-by-side... with three cocks and three pussies between each pair of legs rather than divided equally among your crotches. Curious about the other changes, you tried sticking out your tongue but ended up opening all nine of your mouths since you weren't used to coordinating the body yet, and saw that there were indeed three tongues in each mouth, each being 4 feet long. Curious about the mouths on the top pair of breasts of each torso, you found that they also followed whatever changes your main mouth did, and each had three long tongues as well.
As strange as your newly altered girlfriend-body looked, you felt incredibly turned on, probably thanks in no small part to the many extra sexual organs you now possessed. Under the circumstances, you decided to...