[r-t] Magic Block Doubles

[Simon Humphrey]

12 asymmetrical methods ?
SH

> 5 bells
> touch=+3.1,"B1",
> &5.3.5,"F1",
> &1.5.2,"B2",
> &5.3.2,"F2",
> &1.34.2,"B3",
> &25.3.34,"F3",
> &1.3.23,"B4",
> &2.23.34,"F4",
> &1.5.2,"B2",
> &5.3.5,"F1",
> &1.3.2,"B1",
> &5.23.5,"F5",
> &1.34.23,"B5",
> &5.23.5,"F5",
> &1.3.2,"B1",
> &5.3.34,"F6",
> &4.5.23,"B6",
> &5.3.2,"F2",
> &4.5.23,"B6",
> &2.3.5,"F7",
> &4.3.23,"B7",
> &2.3.5,"F7",
> &4.5.23,"B6",
> &5.23.34,"F8",
> +1.3.2,"B1"
> 
> prove touch
> 
> Seven backworks and eight frontworks in a 120. How many methods?