# ij_nest2split.py

# ij_nest2split.py

import itertools

sentence = "this is just a test"
words = sentence.split()

splits = []
for i in range(0, len(words)):
    for j in range(i + 1, len(words) + 1):
        split = words[i:j]
        splits.append(split)

for split in splits:
    print(split)