Here it is my solution...
So trying to start each cycle I discovered which one has the prewash and which hasn't, here you are my "solution":
1 - hot prewash (45-50°C) - Long/Boosted Hot (90°C) Wash - 4 Rinses - Spin
2 - cold prewash - Long/Boosted Hot (90°C) wash - 4 Rinses - Spin
3 - No Prewash - Long/Boosted Hot (90°C) wash - 4 Rinses - Spin
4 - Cold Prewash - Medshort/Hot filled(60°C) wash - 3 Rinses - Spin
5 * Cold Prewash - Medshort/Warm (45-50°C) wash - 3 Rinses - Spin
6 - No prewash - Short/Warm (45-50°C) wash - 3 Rinses - Spin
7 - No prewash - Short/Cold (30-40°C) wash - 3 Rinses - Spin
8 * No prewash - One cold fill, short agigation period, drain, spin
5 and 8 are signed because they're the only two I tried completely...
Interesting how the 5 has got the prewash...maybe american friends won't find this strange but here for European the prewash is generally a Whites/Heavy duty prerogative...
A friend explained me that this was because at that era detergent was not so active as those of nowadays so it was a must to have a prewash in a warm cycle to prevent saturation of wash water.
8 cycle says "Azzurratura"... My Aunt told me that in past using chlorinated substances to wash and sanitize clothes they briefly became "yellow"...so to avoid this they needed to "azzurrare"...solving a little amount of "INDACO"(here it was called "Azzurrina" that was a powder coloured blue-purple) in the water this becase just "azzurra" (light blue) and they could so give back to clothes thi right WHITE after have wash them.
This was a strictly handwash practice but as this washin machine was just the first automation just when many people yet had to hand wash this allow them to do a hand -action with the machine...
The level in this cycle is rellay a ton of water...quite empty the entire tub...I feel it rise uppre then the bearings!!!
http://www.erbatisana.it/Erbe/II_file/indaco.htm