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| NOP | NOPD | NOPE | NOR | NORA | NORM |
| NOS | NOSC | NOSQL | NOSS | NOSSA | NOSSDAV |
| NOT | NOTE | NOTS | NOV | NOVRAM | NOW |
| NP | NPA | NPAC | NPAPI | NPB | NPC |
| NPCP | NPD | NPDC | NPDU | NPE | NPF |
| NPG | NPH | NPI | NPK | NPL | NPM |
| NPN | NPP | NPPAC | NPR | NPS | NPT |
| NPTF | NPTH | NPU | NPUR | NPX | NPZ |
| NQ | NQC | NQE | NQF | NQL | NQR |
| NQS | NQT | NR | NRA | NRAM | NRAT |
| NRB | NRC | NRE | NRF | NRG | NRLC |
| nroff | NRP | NRR | NRRD | NRRO | NRRR |
| NRS | NRSI | NRT | NRTC | NRTS | NRU |
| NRZ | NS | NS2 | NS3 | NSA | NSB |
| NSBD | NSBS | NSC | NSC1 | NSCD | NSD |
| NSDU | NSE | NSF | NSFNET | NSFW | NSG |
| NSH | NSI | NSIF | NSIS | NSK | NSL |