For “HWMBO”, I get this:
HWMBO HOMEBOY, HBO, HMO, GUMBO, JUMBO, HOBO, HOMO, DUMBO, LIMBO, RAMBO, BIMBO, COMBO, MAMBO, HOB, MOB, HEB, HEM, DEMOB, HM, MB, HEBE, HERB, HEME, HUMOR, HOMOS, HAM, MBA, H’M, HIM, HUB, HUM, HMS, HARBOR, HOMBRE, HUMBLE, HUMBLY, HUMBUG, HUBE, HUME, HOME, HM’S, HOMO’S
I do wonder whether someone’s asleep at the switch…
Later edit: Like me, who doesn’t proofread his entries very well…