Real world company prefixes

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M n O P Q R S T U V W X Y Z Ø
H& H0 H1 H2 H3 H4 H5 H6 H7 H8 H9 HA HB HC HD HE HF HG HH HI HJ HK HL HM HN HO HP HQ HR HS HT HU HV HW HX HY HZ
HOA HOB HOC HOD HOE HOF HOG HOH HOI HOJ HOK HOL HOM HON HOO HOP HOQ HOR HOS HOT HOU HOV HOW HOX HOY HOZ
HOPC HOPF HOPK HOPN HOPR HOPS HOPU HOPX HOPZ
1 HOPX Home Petroleum Co. 8/1920   NAKINA
2 HOPX HOME PETROLEUM CO.     PWRC