Create a function that takes a string as the first argument, and a (string) specification as a second argument. If the specification is "word", return a string with each word reversed while maintaining their original order. If the specification is "sentence", reverse the order of the words in the string, while keeping the words intact.

Examples

str = "There's never enough time to do all the nothing you want"


flip("Hello", "word") ➞ "olleH"

flip("Hello", "sentence") ➞ "Hello"

flip(str, "word") ➞ "s'erehT reven hguone emit ot od lla eht gnihton uoy tnaw"

flip(str, "sentence") ➞ "want you nothing the all do to time enough never There's"

Notes

N/A