BAKOSO

> 1 2 3 4 5 6 1 2 3 4 5 6
> x   x   x x   x   x   x   bell

>

> b S   b O O b s   b O O   High

>

> b   O b S   b   O b S     Middle

>

> O   T b B   b   T b B     Low        T=touch with right hand (silent)