GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
1 #menu option
B(2,5) #name of group
5 #prime
15 #maximal class of p-quotient
1 #output level
{a, b} #number of defining generators
{} #number of relations
5 #exponent law to be satisfied
2 #menu option to save
B25 #file name
0 #exit from program