User blog comment:Primussupremus/AQUARIAN NOTATION/@comment-73.220.135.34-20180225164216

(a,H,b) = a{H-2}b

(a,H,b,c) ~ a (c+1)

(a,H,b,c,d) seems to be at level or maybe, but it's hard to say because your explanation is confusing.

This notation seems to be at a fω2 level.