15 groups of order 19956.
| SmallGroups | group |
|---|---|
| (19956, 1) | C3×C4×C1663 #34093147 |
| (19956, 2) | (C1663⋊C3)⋊C4 #34093148 |
| (19956, 3) | C4×C1663⋊C3 #34093149 |
| (19956, 4) | Dic3×C1663 #34093150 |
| (19956, 5) | C3×Dic1663 #34093151 |
| (19956, 6) | Dic4989 #34093152 |
| (19956, 7) | C22×C3×C1663 #34093153 |
| (19956, 8) | C2×D1663⋊C3 #34093154 |
| (19956, 9) | D3×D1663 #34093155 |
| (19956, 10) | C22⋊(C1663⋊C3) #34093156 |
| (19956, 11) | A4×C1663 #34093157 |
| (19956, 12) | C22×C1663⋊C3 #34093158 |
| (19956, 13) | C2×D4989 #34093159 |
| (19956, 14) | C2×D3×C1663 #34093160 |
| (19956, 15) | C2×C3×D1663 #34093161 |