Seriación decimal

2 - 2 , 5 - ____________________ - ____________________ , ____________________ - ____________________ - ____________________ , ____________________ - ____________________ - ____________________ , ____________________ - ____________________ - 6 , 5 - ____________________ - ____________________ , ____________________ - ____________________ - ____________________ , ____________________ - ____________________ - ____________________ , ____________________ - ____________________ - ____________________ , ____________________ - 1 1