Given a string s='The person is most value tet' and the length k=3. The strings 'person', 'is', 'most' and 'value' have lengths different from k, i.e. len('person') = 6 and 6!=3, len('is') = 2 and 6!=3, len('most') = 4 and 4!=3, len('value') = 5 and 5!=3. The strings 'The' and 'tet' have the length K=3 and are removed from the input string s. The output is 'person is most value'. Given a string s='If you told me about this ok' and the length k=4. The strings 'If', 'you', 'me', 'about' and 'ok' have lengths different from k, i.e.  len('If') = 2 and 2!=4, len('you') = 3 and 3!=4, len('me') = 2 and 2!=4, len('about') = 5 and 5!=4, len('ok') = 2 and 2!=4. The strings 'told' and 'this' have the length K=4 and are removed from the input string s. The output is 'If you me about ok'. Given a string s='Forces of darkeness' and the length k=4. The strings 'Forces', 'of' and 'darkeness' have lengths different from k, i.e. len('Forces') = 6 and 6!=4, len('of') = 2 and 2!=4, len('darkeness') = 9 and 9!=4. There are no strings that have the length K=4. The output is 'Forces of darkeness'.
['The person is most value tet', 3] ['If you told me about this ok', 4] ['Forces of darkeness', 4]
'person is most value' 'If you me about ok' 'Forces of darkeness'