In the 21st 13 cm long

22 within 13.5 cm long

23 in 14 cm long

24 in 14.5 cm long

Within 25 to grow by 15 cm

26 within 15.6 cm long

27 within 16.2 cm long

28 within 16.8 cm long

29 within 17.4 cm long

In the 30 18 cm long