http://rapidttp.com/milhist/vol083jw.html

I could be wrong here but:
1 - Commandant General collar rank insignia
2 - Commandant General cuff rank insignia
3 - Kolonel/Colonel
4 - Luitenant Kolonel/Lieutenant Colonel
5 - Major
6 - Kaptein/Captain
7 - Luitenant/Lieutenant
8 - Tweede Luitenant/Second Lieutenant
I would imagine that cuff rank insignia for 2nd Lt. - Colonel followed a similar pattern as the rank insignia for Cmdt General.