| Keyword | Most frequent expressions (number of websites) |
|---|---|
| pbr | minim pbr (1), pbr vegan (1), need pbr (1), command pbr (1), pbr feature (1), irony pbr (1), pbr squid (1), truck pbr (1), pbr scenester (1), entire pbr (1), pbr pipeline (1), mp pbr (1), pbr model (1) |
| pbx | voip pbx (4), pbx system (3), ip pbx (2), pbx open (2), asterisk pbx (2), pbx perfect (1), telecom pbx (1), corporate pbx (1), pbx forward (1), pbx integrator (1), traditional pbx (1), pbx conference (1), certificate pbx (1) |