/  5040 Grandsire Triples
/  Composed by J J Parker
/  12-part, 7th obs

7 bells

Parkers=" @",2((z=b),5Part,(z=s),Part)

Part=b,2p,b,s,line,p,b,3p,2b,2p,line,p,b,3p,b,p,b,s,line,2b,s,line,p,b,p,z,line,line

p=g,+7.1," @"
b=g,+3.1," @ -"
s=g,+3.123," @ s"

g=+3.1.7.1.7.1.7.1.7.1.7.1
line=" -------"

prove Parkers