23. m1x′0 † m′y′0x′y′0 [Fig. I.] Concl. right.

24. x1m0 † m′1y′0x1y′0 [Fig. I (α).] Concl. right.

25. xm′0 † m1y′0xy′0 [Fig. I.] Concl. right.

26. m1x0 † y1m′0y1x0 [Fig. I (α).] Concl. right.

27. x1m′0 † my′0x1y′0 [Fig. I (α).] Concl. right.

28. x1m′0 † y′m′0 Fallacy of Like Eliminands not asserted to exist.

29. x′m0 † m′y′0x′y′0 [Fig. I.] Concl. right.

30. x1m′0 † m1y0x1y0 [Fig. I (α).] Concl. right.

31. x′1m0 † y′m′0x′1y′0 [Fig. I (α).] Concl. right.

32. xm0 † y′m′0xy′0 [Fig. I.] Concl. right.