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

HCA HCB HCC HCD HCE HCF HCG HCH HCI HCJ HCK HCL HCM HCN HCO HCP HCQ HCR HCS HCT HCV HCW HCX HCY HCZ

HCOC HCOD HCOF HCOJ HCOK HCOO HCOR HCOS HCOU HCOW HCOY