Write a program that finds the number of times the following substrings apper in the text: "un" "an" "in" "he" File name: substr_finder Sample Output: In the following paragraph: Debating me breeding be answered an he. Spoil event was words her off cause any. Tears woman which no is world miles woody. Wished be do mutual except in effect answer. Had friendship thoroughly cultivated son hills day ten. Examine waiting his evening day passage proceed. "un" appears in the text 0 time(s) and the lowest index of the first occurrence of "un" is at index -1 "an" appears in the text 5 time(s) and the lowest index of the first occurrence of "an" is at index 24 "in" appears in the text 6 time(s) and the lowest index of the first occurrence of "in" is at index 5 "he" appears in the text 3 time(s) and the lowest index of the first occurrence of "he" is at index 36 pass