Put differently, if the examples are imagined to be arrangements of rigid sticks/hoops/etc resting on a flat surface, positive examples include sticks/hoops/etc that could be picked up without disturbing the other objects.
Adjacent-numbered pages: BP1130 BP1131 BP1132 BP1133 BP1134  *  BP1136 BP1137 BP1138 BP1139 BP1140
precise
Leo Crabbe