set symbol {
 GS AC AF AL DZ AS AD AO AI AQ AG AR AM AW AU AT AZ BS BH BD BB BY BE
 BZ BJ BM BT BO BA BW BV BR IO BN BG BF BI BY KH CM CA CV KY CF
 TD CL CN CX CC CO KM CG CK CR CI HR HR CU CY CS DK DJ DM DO TP
 EC EG SV GQ EE ET FK FK FO FJ FI FR GF PF TF GA GM GE DE DE GH
 GI GR GL GD GP GU GT GN GW GY HT HM HN HK HU IS IN ID IR IQ IE
 IL IT JM JP JO KZ KE KI KP KR KW KG LA LV LB LS LR LY LI LT LU
 MO MK MG MW MY MV ML MT MH MQ MR MU MX FM MD MC MN MS MA MZ MM
 NA NR NP NL AN NT NC NZ NI NE NG NU NF MP NO OM PK PW PA PG PY
 PE PH PN PL PT PR QA RE RO RU RW KN LC VC WS SM ST SA SN SC SL
 SG SI SB SO ZA ES LK SH PM SD SR SJ SZ SE CH CH SY TW TJ TZ TH
 TG TK TO TT TN TR TM TC TV UG UA AE UK GB US UM UY SU UZ VU VA
 VE VN VI VG WF EH YE YU ZR ZM ZW COM EDU NET MIL ORG GOV KP KR
 LA SU SK CZ
}