This calculates all supergroups of a specific type and index. The group and supergroup can be specified by their space-group numbers, or you can start to type the space-group symbols (using _ before a subscript) and possible options to choose from will be shown.
Supergroup number: 69
Subgroup number: 42 F m m 2
See the result
A list of all transformations that give different supergroups is shown.
Links are provided to the supergroup transformation, the supergroup Wyckoff-position splittings and the coset decomposition for each transformation.