by Валентина Петрова
https://docs. google. com/spreadsheet/ccc? key=0AppBohTP10lsdDBCMGVqV1NENzRkN0J oOTBtYi1udWc
https://docs. google. com/spreadsheet/ccc? key=0AppBohTP10lsdDBCMGVqV1NENzRkN0J oOTBtYi1udWc Less