Write a function called removeconsonants which removes all the consonants in a given phrase. the upper and lower case of the remaining characters should remain unchanged. the input and output phrases are string scalars. the input string could be any length. hint: the function should work for both upper and lower case. at the start of the function, the input string scalar should be converted to a character vector, the characters should be manipulated, and the resulting character vector should be converted to a string scalar upon exiting. restrictions: loops should not be used. the internal functions and ismember() should be used.