export function groupConsecutiveDuplicates(nums: number[]): number[][] {
  // Escribe tu solución aquí
  const output:  number[][] = [];
  let currentIndex = 0;

  nums.forEach(num => {
    if(output[currentIndex] === undefined){
      output[currentIndex] = [num];
    }else{
      if(output[currentIndex].includes(num)){
        output[currentIndex].push(num);
      }else{
        currentIndex++;
        output[currentIndex] = [num];
      }
    }
  })

  return output;
}