Pattern challenge o

list = ['A','B','C','D','E','F','G']

start=0
end=len(list)
while start <end:
  new_list=list[:end-start]
  res =''.join(new_list) + ' ' *(start *2 - 1) + ''.join(new_list[::-1])
  if start==0:
    res=res.replace(list[-1], '', 1)
  print(res)
  start +=1