Univ. is “people”; m = popular; x = clever; y = obliging.

x1m′0y1m′0 ¶ nothing.

[Fallacy of Like Eliminands not asserted to exist.]

24. Thoughtless people do mischief;
No thoughtful person forgets a promise.

Univ. is “persons”; m = thoughtful; x = mischievous; y = forgetful of promises.

m′1x′0my0x′y0

i.e. No one, who forgets a promise, fails to do mischief.

[SL6-B]Solutions for § 6.

1. xm1my′0xy1 [Fig. II.] Concl. right.

2. x1m′0ym′0 Fallacy of Like Eliminands not asserted to exist.