Three complete 12-month systems for the Riso Month Sheet, every ink from the real risograph drum catalog. Each card: the month's field ink (the wallpaper's whole ground), the second ink shown as the big numeral and bottom bar, both multiplying like real overprint. Answer back in the terminal — pick a system, or a system plus swaps ("A, but October from B").
Grain shown here is roughly what the wallpaper carries. Gradient fill mode will fade the field ink through halftone into the second ink; flat mode is solid coverage like above.