I am given an array with 49 My task is to select unique groups of 7 elements and also find out the number of possible outputs.

Eg. [A,a,B,b,C,c,D,d,E,e,F,f,G,g,H,h,I,i,J,j,K,k,L,l,M,m,N,n,O,o,P,p,Q,q,R,r,S,s,T,t,U,u,V,v,W,w,X,x,Y]

Then outputs: [ [A,a,B,b,C,c,D], [a,B,b,C,c,D,d], [B,b,C,c,D,d,E], [b,C,c,D,d,E,e], . . . [A,C,c,D,d,E,e], [A,B,b,c,D,d,E], . . . ] How do I get this outputs? Below is what I have tried based on the answer i got from stackoverflow:

let jar = ["A","a","B","b","C","c","D","d","E","e","F","f","G","g","H","h","I","i","J","j","K","k","L","l","M","m","N","n","O","o","P","p","Q","q","R","r","S","s","T","t","U","u","V","v","W","w","X","x","Y"];
 
const size = 7;

let result11 = [];

for(let i = 0; i <= (jar.length - size); i++){
     result11.push(jar.slice(i, size+i));
}
console.log(result11)

Each of the output should be unique such that there should not be any repetition. Eg. outputs like aaaaaaa, aaxxxYY, AAAAAAA, AABbcDe are not valid but outputs like avWwXxY,bvWwXxY,cvWwXxY alongside others etc