I'm looking for some code that would generate all possible combinations for a length of 3-5 characters from a given array

for example if I had an array: [a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z]

the code would print out something like aaaa,aaab,aaac,aaad...bacd,bace,bacf...aaaaa,aaaab and so on for all possible letter combinations for the example code it doesn't have to be the whole array that is given it can even just be numbers