NATO phonetic alphabet
| Letter | Code | | Letter | Code |
| A | Alfa | | N | November |
| B | Bravo | | O | Oscar |
| C | Charlie | | P | Papa |
| D | Delta | | Q | Quebec |
| E | Echo | | R | Romeo |
| F | Foxtrot | | S | Sierra |
| G | Golf | | T | Tango |
| H | Hotel | | U | Uniform |
| I | India | | V | Victor |
| J | Juliett | | W | Whiskey |
| K | Kilo | | X | X-ray |
| L | Lima | | Y | Yankee |
| M | Mike | | Z | Zulu |
Greek Alphabet
| Letter | Upper | Lower |
| 1 | alpha | Α | α | Α | α |
| 2 | beta | Β | β | Β | β |
| 3 | gamma | Γ | γ | Γ | γ |
| 4 | delta | Δ | δ | Δ | δ |
| 5 | epsilon | Ε | ε | Ε | ε |
| 6 | zeta | Ζ | ζ | Ζ | ζ |
| 7 | eta | Η | η | Η | η |
| 8 | theta | Θ | θ | Θ | θ |
| 9 | iota | Ι | ι | Ι | ι |
| 10 | kappa | Κ | κ | Κ | κ |
| 11 | lambda | Λ | λ | Λ | λ |
| 12 | mu | Μ | μ | Μ | μ |
| 13 | nu | Ν | ν | Ν | ν |
| 14 | xi | Ξ | ξ | Ξ | ξ |
| 15 | omicron | Ο | ο | Ο | ο |
| 16 | pi | Π | π | Π | π |
| 17 | rho | Ρ | ρ | Ρ | ρ |
| 18 | sigma | Σ | σ | Σ | σ |
| 19 | tau | Τ | τ | Τ | τ |
| 20 | upsilon | Υ | υ | Υ | υ |
| 21 | phi | Φ | φ | Φ | φ |
| 22 | chi | Χ | χ | Χ | χ |
| 23 | psi | Ψ | ψ | Ψ | ψ |
| 24 | omega | Ω | ω | Ω | ω |