| actual group definitions |
| # | Definition | Sets |
| 1 | the part of the potential group consisting of members who actually join | 6 sets |
| 2 | the part of the potential group consisting of members who actually join. | 3 sets |
| 3 | that part of the potential group consisting of members who actually join. | 3 sets |
| 4 | that part of the potential group consisting of members who actually join | 2 sets |
| 5 | those who actually join and pay dues | 2 sets |
| 6 | the part of the group of people who actually join | 1 set |
| 7 | the part of the potential group consisting of members who really join | 1 set |
| 8 | the part of the potential group consisting of members that actually join | 1 set |
| 9 | is composed of those in the potential group who choose to join. | 1 set |
| 10 | a group composed of those in the potential group who are members of the interest group. | 1 set |