This is actually 5 color- Y, M/PM(PM is like LM)C/PC(PC is like LC),
PBk(photo black), MBk(matt black), Gy(Gy is like LK(light black))
You choose one of MBk or PBk as part of a media type selection
for K(black), and Gy is essentially an LK(light black).
R(red) is the only other full tone ink...