4 7 4 ish unknown IS0 IS1 IS2 IS3 IS4 ISCLOCKRUNNING Normal Restricted IT0 IT1 IT10 IT2 IT3 IT4 IT41 IT42 IT43 IT44 IT5 IT51 IT52 IT6 IT7 IT8 IT9 IL0 light0 IR0 Report0 IM0 IM1 IM2 IM3 plain IMCURRENTTIME IMRATEFACTOR IH0 Virtual 0 IH1 Double 51 52 IH10 Virtual 10 IH2 LDT IH20 upper IH21 middle IH22 lower IH3 Merg IT0 IH4 Merg3 IT0 IT0 IH5 Merg4 IT0 IT0 IT0 IH6 Quad 41 42 43 44 IH7 Single lunar yellow 1 IH8 Single1 yellow green 1 IH9 Triple 1 2 3 IH:SE8C:"1";"2" SE8c 1 2 IF$shsm:AAR-1946:CPL:IH20:IH21:IH22 CPL mast 500