deembed.txt

Matrices:
	C = cascade
	A = left
	B = right

START
	s11c = s11a + (s11b * s21a * s12a) / (one - s22a*s11b);
	s12c = (s12a*s12b) / (one - s22a*s11b);
	s21c = (s21a*s21b) / (one - s22a*s11b);
	s22c = s22b + (s22a * s21b * s12b) / (one - s22a*s11b);

RESULTS
	Solve for A, knowing B and C
		s22a = (s22c - s22b) / (s21b*s12b + s22c*s11b - s22b*s11b)
		s12a = (s12c - s12c*s11b*s22a) / s12b
		s21a = (s21c - s21c*s22a*s11b) / s21b
		s11a = s11c - (s11b * s21a * s12a) / (one - s22a*s11b)

	Solve for B, knowing A and C
		s11b = (s11c - s11a) / (s21a*s12a + s22a*s11c - s22a*s11a)
		s12b = (s12c - s12c*s11b*s22a) / s12a
		s21b = (s21c - s21c*s22a*s11b) / s21a
		s22b = s22c - (s22a * s21b * s12b) / (one - s22a*s11b)