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