Toutes les façons de diviser un tableau de chaînes en parties en JavaScript

"(az, toto picaro zone kiwi)(az toto, picaro zone kiwi)(az toto picaro, zone kiwi)(az toto picaro zone, kiwi)"

const arr = ["az", "toto", "picaro", "zone", "kiwi"];
const findAllPossiblities = (arr = []) => {
   let array;
   const res = [];
   for(let i = 1; i < arr.length; i++){
      array = [];
      array.push(arr.slice(0,i).join(" "));
      array.push(arr.slice(i).join(" "));
      res.push(array);
   };
   return res;
};
console.log(findAllPossiblities(arr));

[
[ 'az', 'toto picaro zone kiwi' ],
[ 'az toto', 'picaro zone kiwi' ],
[ 'az toto picaro', 'zone kiwi' ],
[ 'az toto picaro zone', 'kiwi' ]
]