(1)AB and AC, AB and AD, AB and BC, AB and BE, BE and ED, etc.

(2) For example, in the plane ABED, there are AB and DE, and AD and BE do not intersect.

Or in the a plane, there are AD CE, AC and DE disjoint.

In the plane BCFE, there are BC and EF, BE and cf.

(3) A.D. and B.C., A.D. and Died

BE and AC, BE and DF,

CF and AB, CF and DE.