Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Call Sign | Frequency | City of License | Licensee | Format |
| --- | --- | --- | --- | --- |
| KMSA | 91.3 FM | Grand Junction | Colorado Mesa University | AAA |
| KMGJ | 93.1 FM | Grand Junction | MBC Grand Broadcasting, Inc. | Top 40 (CHR)/Contemporary Hit Radio |
| KKVT | 100.7 FM | Grand Junction | MBC Grand Broadcasting, Inc. | Country |
| KLFV | 90.3 FM | Grand Junction | Educational Media Foundation | Christian Contemporary |
| KMOZ-FM | 92.3 FM | Grand Junction | MBC Grand Broadcasting, Inc. | Adult Hits |
| KGJN-LP | 106.7 FM | Grand Junction | Colorado, State Of, Telecom Servs | News Talk Information |
| KJOL | 620 AM | Grand Junction | United Ministries | Christian Contemporary |
| KCIC | 88.5 FM | Grand Junction | Pear Park Baptist Schools | Religious |
| KBKL | 107.9 FM | Grand Junction | Townsquare Media Group | Oldies |
| KAFM | 88.1 FM | Grand Junction | Grand Valley Public Radio Co, Inc | Variety |
| KEXO | 1230 AM | Grand Junction | Townsquare Media Group | Regional Mexican/Talk |
| KNZZ | 1100 AM | Grand Junction | MBC Grand Broadcasting, Inc. | News/Talk |
| KMXY | 104.3 FM | Grand Junction | Townsquare Media Group | Hot Adult Contemporary |
| KPRN | 89.5 FM | Grand Junction | Public Broadcasting of Colorado, Inc. | Public/News/Talk |
| KTMM | 1340 AM | Grand Junction | MBC Grand Broadcasting, Inc. | Sports/Talk |
| KAAI | 98.5 FM | Palisade, Colorado | Educational Media Foundation | Christian Rock |
| KMZK (FM) | 106.9 FM | Clifton | Charles D. Hall |  |
| KEKB | 99.9 FM | Fruita | Townsquare Media Group | Country |
| KRZX | 106.1 FM | Redlands | Cochise Media Licenses LLC |  |
| KZKS | 105.3 FM | Rifle, Colorado | Western Slope Communications | Classic Hits |
| KNOZ | 97.7 FM | Orchard Mesa | Paul Varecha | All-News Radio |
| KTUN | 93.5 FM | New Castle, Colorado | Wildcat Communications | Spanish Hits |
| KKNN | 95.1 FM | Delta, Colorado | Townsquare Media Group | Active Rock |
| KSTR-FM | 96.1 FM | Montrose, Colorado | MBC Grand Broadcasting | Classic Rock |
| KUBC | 580 AM | Montrose, Colorado | Cherry Creek Radio | News/Talk |
Question:
which cities have at least three call signs?
Answer:
Grand Junction