The Markov walk control parameters
Enter the number of Markov steps, and the stepsize for fragment a
500,0.002d0
Enter the number of Markov steps, and the stepsize for fragment b
500,0.025d0
Enter the constraint flag ( 0 or 1), and the bondlength for each bond
0   6.0d0
0   6.0d0
0   6.0d0
0   6.0d0
0   6.0d0
0   6.0d0
