 extra ones. 11 is a group of 10 and one extra one. 12 is a group of 10 and two extra ones. Is a group of 10 and three extra ones. 14 is a group of 10 and four extra ones. 15 is a group of 10 and five extra ones. 16 is a group of 10. Show me 10. 17 is a group of 10 and seven extra ones. 18 is a group of 10 and eight extra ones. Show me your times. 19 is a group of 10 and nine extra ones.