J02.5 Added results for point 5.
J02.3 Added result for point 3.
J02.2.1 Added first example for point 2.
J02.2.2 Added second example for point 2.
J02.2.3 Added third example for point 2.
J02.4 Added results for point 4.
Merge branch 'ydanylchenko'