TwoFlows tf = new TwoFlows(f1, f2);
		tf.adjustDistance();
		f1 = tf.f1;
		f2 = tf.f2;
        System.out.println(formatF1F2F3(f1,f2,f3));
		TwoFlows tf2 = new TwoFlows(f2, f3);
        tf2.adjustDistance();
		f2 = tf2.f1;
		f3 = tf2.f2;
        System.out.println(formatF1F2F3(f1,f2,f3));
		TwoFlows tf3 = new TwoFlows(f3, f3);
        tf3.adjustDistance();
		f3 = tf3.f1;
		f3 = tf3.f2;
        System.out.println(formatF1F2F3(f1,f2,f3));