| Count | Prefix |
|---|---|
| 4 | 2n- |
| 6 | 2n. |
| 1 | 2n0 |
| 3 | 2n1 |
| 12 | 2n2 |
| 2 | 2n3 |
| 5 | 2n4 |
| 2 | 2n5 |
| 1 | 2n6 |
| 2 | 2n7 |
| 3 | 2n8 |
| 4 | 2n9 |
| 38 | 2na |
| 3 | 2nb |
| 10 | 2nc |
| 1,045 | 2nd |
| 82 | 2ne |
| 10 | 2nf |
| 10 | 2ng |
| 4 | 2nh |
| 56 | 2ni |
| 4 | 2nj |
| 2 | 2nk |
| 3 | 2nl |
| 5 | 2nm |
| 6 | 2nn |
| 41 | 2no |
| 6 | 2np |
| 1 | 2nq |
| 4 | 2nr |
| 21 | 2ns |
| 13 | 2nt |
| 28 | 2nu |
| 7 | 2nv |
| 4 | 2nw |
| 2 | 2nx |
| 7 | 2ny |
| 2 | 2nz |