creation date: Wed Dec 2 19:22:45 MET 1998

68#1 
A^17=id
B^2=id (A)
C^2=B (A^16 B)
68#2 
A^2=id
B^17=id (A)
C^2=A (A B)
68#3 
A^17=id
B^2=id (A^16)
C^2=B (A^13 B)
68#4 
A^17=id
B^2=id (A)
C^2=id (A^16 B)
68#5 
A^17=id
B^2=id (A)
C^2=id (A B)

last updated: Wed Dec 2 19:23:04 MET 1998 , Anton Betten