Do the substitution numbers in rugby mean anything?

Question

I know numbers 1-15 correspond with certain positions. And i was wondering if 16-22 meant anything. For example lower numbers being forward substututes and higher ones being back substitutes or if they are somewhat random.

Answer 1

Yes they do.  The lower numbers are the forwards and the higher numbers are the backs.  The forward subs will have a lower no than the back subs, like a prop will be a 16 for example, winger no. 20 etc x*x

Answer 2

16.  Hooker - Specialist

17.  Prop - Specialist

18.  Lock

19.  Flanker/No.8

20.  Halfback - Specialist

21.  Inside Back

22.  Outside Back

Answer 3

yeah they do

most likely to like this 16 - reserve hooker 17-prop 18-lock/loose forward 19 - same as 18  20 - halfback 21 - utility back 22- wing/full back