Implementation
const Map<String, String> samples = {
"AD": "AD1200012030200359100100",
"AE": "AE070331234567890123456",
"AL": "AL47212110090000000235698741",
"AT": "AT611904300234573201",
"AZ": "AZ21NABZ00000000137010001944",
"BA": "BA391990440001200279",
"BE": "BE68539007547034",
"BG": "BG80BNBG96611020345678",
"BH": "BH67BMAG00001299123456",
"BR": "BR9700360305000010009795493P1",
"BY": "BY13NBRB3600900000002Z00AB00",
"CH": "CH9300762011623852957",
"CR": "CR05015202001026284066",
"CY": "CY17002001280000001200527600",
"CZ": "CZ6508000000192000145399",
"DE": "DE89370400440532013000",
"DK": "DK5000400440116243",
"DO": "DO28BAGR00000001212453611324",
"EE": "EE382200221020145685",
"ES": "ES9121000418450200051332",
"FI": "FI2112345600000785",
"FO": "FO6264600001631634",
"FR": "FR1420041010050500013M02606",
"GB": "GB29NWBK60161331926819",
"GE": "GE29NB0000000101904917",
"GI": "GI75NWBK000000007099453",
"GL": "GL8964710001000206",
"GR": "GR1601101250000000012300695",
"GT": "GT82TRAJ01020000001210029690",
"HR": "HR1210010051863000160",
"HU": "HU42117730161111101800000000",
"IE": "IE29AIBK93115212345678",
"IL": "IL620108000000099999999",
"IQ": "IQ98NBIQ850123456789012",
"IS": "IS140159260076545510730339",
"IT": "IT60X0542811101000000123456",
"JO": "JO94CBJO0010000000000131000302",
"KW": "KW81CBKU0000000000001234560101",
"KZ": "KZ86125KZT5004100100",
"LB": "LB62099900000001001901229114",
"LC": "LC07HEMM000100010012001200013015",
"LI": "LI21088100002324013AA",
"LT": "LT121000011101001000",
"LU": "LU280019400644750000",
"LV": "LV80BANK0000435195001",
"MC": "MC5811222000010123456789030",
"MD": "MD24AG000225100013104168",
"ME": "ME25505000012345678951",
"MK": "MK07250120000058984",
"MR": "MR1300020001010000123456753",
"MT": "MT84MALT011000012345MTLCAST001S",
"MU": "MU17BOMM0101101030300200000MUR",
"NL": "NL91ABNA0417164300",
"NO": "NO9386011117947",
"PK": "PK36SCBL0000001123456702",
"PL": "PL61109010140000071219812874",
"PS": "PS92PALS000000000400123456702",
"PT": "PT50000201231234567890154",
"QA": "QA58DOHB00001234567890ABCDEFG",
"RO": "RO49AAAA1B31007593840000",
"RS": "RS35260005601001611379",
"SA": "SA0380000000608010167519",
"SC": "SC18SSCB11010000000000001497USD",
"SE": "SE4550000000058398257466",
"SI": "SI56263300012039086",
"SK": "SK3112000000198742637541",
"SM": "SM86U0322509800000000270100",
"ST": "ST68000100010051845310112",
"SV": "SV62CENR00000000000000700025",
"TL": "TL380080012345678910157",
"TN": "TN5910006035183598478831",
"TR": "TR330006100519786457841326",
"UA": "UA213223130000026007233566001",
"VA": "VA59001123000012345678",
"VG": "VG96VPVG0000012345678901",
"XK": "XK051212012345678906",
"AO": "AO69123456789012345678901",
"BF": "BF2312345678901234567890123",
"BI": "BI41123456789012",
"BJ": "BJ11B00610100400271101192591",
"CF": "CF4220001000010120069700160",
"CI": "CI93CI0080111301134291200589",
"CM": "CM9012345678901234567890123",
"CV": "CV30123456789012345678901",
"DJ": "DJ2110002010010409943020008",
"DZ": "DZ8612345678901234567890",
"GQ": "GQ7050002001003715228190196",
"HN": "HN54PISA00000000000000123124",
"IR": "IR861234568790123456789012",
"MG": "MG1812345678901234567890123",
"ML": "ML15A12345678901234567890123",
"MZ": "MZ25123456789012345678901",
"SN": "SN52A12345678901234567890123",
"KM": "KM4600005000010010904400137",
"TD": "TD8960002000010271091600153",
"CG": "CG3930011000101013451300019",
"EG": "EG800002000156789012345180002",
"GA": "GA2140021010032001890020126",
"MA": "MA64011519000001205000534921",
"NI": "NI92BAMC000000000000000003123123",
"NE": "NE58NE0380100100130305000268",
"TG": "TG53TG0090604310346500400070",
};
