1065. Index Pairs of a String
https://leetcode.com/problems/index-pairs-of-a-string/
https://leetcode.com/problems/index-pairs-of-a-string/
https://leetcode.com/problems/search-suggestions-system/
https://leetcode.com/problems/word-break/
https://leetcode.com/problems/word-break-ii/
https://leetcode.com/problems/implement-trie-prefix-tree/
https://leetcode.com/problems/design-add-and-search-words-data-structure/
https://leetcode.com/problems/palindrome-pairs/
https://leetcode.com/problems/design-in-memory-file-system/
https://leetcode.com/problems/prefix-and-suffix-search/
https://leetcode.com/problems/number-of-matching-subsequences/
https://leetcode.com/problems/short-encoding-of-words/