List of states:

[AL] Alabama
[AK] Alaska
[AZ] Arizona
[FL] Florida
[GA] Georgia
[HI] Hawaii
[ID] Idaho
[IN] Indiana
[IA] Iowa
[KS] Kansas
[ME] Maine
[MT] Montana
[NV] Nevada
[OH] Ohio
[OR] Oregon
[TX] Texas
[UT] Utah
[VT] Vermont
[WY] Wyoming

List of cities in Oklahoma:

Ada, OK 74820
Agra, OK 74824
Alex, OK 73002
Alva, OK 73717
Ames, OK 73718
Corn, OK 73024
Duke, OK 73532
Enid, OK 73701
Enid, OK 73703
Fay, OK 73646
Felt, OK 73937
Foss, OK 73647
Fox, OK 73435
Gage, OK 73843
Gans, OK 74936
Gate, OK 73844
Gore, OK 74435
Howe, OK 74940
Hoyt, OK 74440
Hugo, OK 74743
Jay, OK 74346
Jet, OK 73749
Kemp, OK 74747
Lane, OK 74555
Leon, OK 73441
Loco, OK 73442
Maud, OK 74854
May, OK 73851
Mead, OK 73449
Meno, OK 73760
Milo, OK 73401
Muse, OK 74949
Nash, OK 73761
Okay, OK 74446
Prue, OK 74060
Reed, OK 73554
Roff, OK 74865
Rufe, OK 74755
Ryan, OK 73565
Snow, OK 74567
Taft, OK 74463
Tom, OK 74740
Vian, OK 74962
Vici, OK 73859
Wann, OK 74083
Yale, OK 74085