| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| gchq code breaker | 1.32 | 0.1 | 1794 | 74 |
| gchq code | 1.19 | 0.2 | 708 | 61 |
| gchq code-breaking challenge | 0.56 | 0.9 | 4652 | 78 |
| gchq code book | 1.78 | 0.2 | 7387 | 24 |
| gchq code quiz | 1.51 | 0.8 | 8885 | 87 |
| gchq code breaking | 1.42 | 0.8 | 164 | 54 |
| gchq code christmas | 0.5 | 0.4 | 7541 | 30 |
| gchq code breaker challenge | 0.52 | 0.4 | 4987 | 3 |
| gchq code breaking christmas card | 1.1 | 0.2 | 945 | 35 |
| gchq christmas card code | 0.89 | 1 | 3420 | 73 |
| gchq secret code | 1.24 | 0.2 | 8238 | 55 |
| gchq secret code quiz | 1.95 | 0.3 | 7396 | 67 |
| gchq christmas code breaker | 0.6 | 0.1 | 433 | 85 |
