there is one basic chord per note you take that note as the root of the chord and find what would be the third and fith of that chord. so if we take the notes from the orrigonal scale we get what is below

second chord is the 2nd 4th 6th note (D,F,A) which will give Dminor
third chord is the 3rd 5th 7th note (E,G,B) which willl give Eminor
fourth chord is the 4th 6th 8th/1st Fmajour
fith chord is the 5th 7th 2nd Gmajour
sixth chord is the 6th 8th/1st 3rd Aminor
seventh is the 7th 2nd 4th B minor flat 5

the seventh chord isnt used much and sometimes is played as b minor with out the flat 5.

(i got lasy and couldnt be bothered to right the notes of the fourth chord onwards)