Сколько полутонов между тониками мажора и параллельного минора?

mark and he are thirteen years old.and they are very sportly. they often go to the gym - at least three times a week. mark does exercises to make his arms strong. he can't walk because of a car accident, so he goes everywhere in wheelchair. but it doesn't stop him doing the things that boys his age want to do.

есть хорошая песня ,,о той весне",не столь современная(3 года),но трогательная