$known_good = @{
	"IC" = 50
	"IH" = 50
	"IP" = 50
	"IS" = 50
	"IW" = 50
	"KE" = 50
	"KET" = 50
	"MCX" = 50
	"MKC" = 10
	"MWE" = 50
	"SBT" = 50
	"WMK" = 50
	"XC" = 10
	"XK" = 10
	"XW" = 10
	"ZC" = 50
	"ZO" = 50
	"ZS" = 50
	"ZW" = 50
	"ZCT" = 50
	"ZWT" = 50
}