Divide the words into 3 groups: days of the week, school

Divide the words into 3 groups: days of the week, school subjects, activities after school. Some of them can be both. History, Tuesday, Computing, Chess playing, Friday, Singing, Maths, English, Tennis playing, Sunday, Reading, Dancing, Monday, Geography, Wednesday, Russian, Playing the piano, Thursday, Swimming, Saturday. Days: ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------. Subjects: -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------. Activities:-------------------------------------------------------------------------------------.