In Fan Fiction, what does CMC_W/G mean for shipping?

Question

I understand that the G refers to Ginny, but the other letters confuse me. I also don't understand:

CC/CFC_W

D/OFC_W

Answer 1

I figured that you were looking at Harry Potter fanfiction, which helped because I just went to the FictionAlley characters page and the list was there.

Other Canon Wizard (CMC_W)

Other Canon Witch (CFC_W)

Original Female Witch (OFC_W)

Other Canon Female Muggle (CFC_M)

Other Canon Male Muggle (CMC_M)

Colin Creevey (CC)

Draco Malfoy (D)