ifQ(621)
.answered()
.andQ(11)
.answered()
.sub(Q(621) , Q(11))
.store(Q(1131))

ifQ(951)
.answered()
.andQ(621)
.answered()
.sub(Q(951) , Q(621))
.store(Q(1141))

ifQ(672)
.notAnswered()
.disappear(Q(81),	Q(1291),	Q(1331),	Q(1371),	Q(441),	Q(1351),	Q(401),	Q(691),	Q(241),	Q(1321),	Q(1231));