in string s lowercase letter letter form consecutive group characterfor example string like s abbxxxxzyy group bb xxxx z yyA group identify interval start end start end denote start end index inclusive group in example xxxx interval 36a group consider large 3 charactersreturn interval large group sort increase order start index Example 1input s abbxxxxzzyoutput 36explanation xxxx large group start index 3 end index 6Example 2Input s abcoutput Explanation we group b c large groupsExample 3input s abcdddeeeeaabbbcdoutput 35691214explanation the large group ddd eeee bbb Constraints1 slength 1000 contain lowercase english letter