Well... better read the text twice and not only one time ^_^
I recognized the part with the numbers at the second time i read this document on the pc where it says that the manufacturer (is it called so?) did a little mistake at this machine and the buttons and that you have to notice to yourself that the lower part looks like 6 5 4 and not like 4 5 6.
First i think it must be looking like 2 3 4 because it said that the right button is 4 and the others are the lower numbers... but when 2 and 3 are used in the first row (1 2 3) and the under row is X X 4 then the two X must be numbere 5 and 6... and in right order it must be 6 5 4.
Well just try it and good luck i'm writing too much, again ^_^
i know what was my problem... the chemicals layout was same as the numbers... so at first I thought: 1st and 2nd row starts from left, going to right... but now i realised that the numbers and chemicals ordering too is like this.
->->->
<-<-<-