1def beginning(word):
 2    length = len(word) # take the length
 3    end = length # default end
 4
 5    # in both 0|1 remainder cases we have the same amount
 6    if length % 3 != 2: 
 7        end = end // 3
 8        return word[0:end]
 9    # other wise the 2 remainder case
10    end = end // 3 + 1 
11    return word[0:end]
12
13def middle(word):
14    length = len(word)
15    start = 0  #default start
16    end = length # default end
17    # take the portion from the first third to the second third
18    if length % 3 == 0: 
19        start = length // 3
20        end = 2 * start
21        return word[start:end]
22    # both the beg and end are the same length - leftover is the middle
23    if length % 3 == 1: 
24        start = length // 3
25        end = length - (length // 3)
26        return word[start:end]
27    # same as the above but account for the 'extra' chars a 1 more
28    if length % 3 == 2: 
29        start = length // 3 + 1
30        end = length - (length // 3) - 1
31        return word[start:end]
32    
33def end(word):
34    # take the beginning of the reversed string
35    reversed_end = beginning(word[::-1]) 
36    # reverse it back and return 
37    return reversed_end[::-1] 
38
39def split_sentence(sentence):
40    result=[]  # init a list
41    words=sentence.split() # split the sentence
42    for word in words: # traverse the words 
43        parts=(beginning(word),middle(word),end(word)) # construct the tuple
44        result.append(parts) # add to the list
45    return result