For uses denoted with “♦” in Section 22-121 (Use Group II – general use allowances), the following limitations shall apply:

1. In R3 Districts, all residential uses shall be permitted except that:
   1. in R3A Districts, residential uses shall be limited to single- or two-family detached residences and single- or two-family zero lot line buildings;
   2. in R3-1 Districts, residential uses shall be limited to single- or two-family residences, detached or semi-detached; and
   3. in R3X Districts, residential uses shall be limited to single- or two-family detached residences.
2. In R4 Districts, all residential uses shall be permitted except that:
   1. in R4-1 Districts, residential uses shall be limited to single- or two-family residences, detached or semi-detached, or single- or two-family zero lot line buildings;
   2. in R4B Districts, residential uses shall be limited to single- or two-family residences in detached, semi-detached, attached, or zero lot line buildings; and
   3. in R4A Districts, residential uses shall be limited to single- or two-family detached residences. 
3. In R5 Districts, all residential uses shall be permitted except that in R5A Districts, residential uses shall be limited to single- or two-family detached residences.