Five-phase winding in 15 slots

The multi-phase windings ( four, five, six, nine-phase etc) powered via electronics are common case recently and it's hard to find any internal connection diagrams for such a windings. How to create this kind of winding? - Here is the first example of five-phase, 2 pole winding in 15 slots.

Another example of five-phase winding. Number of slots/poles is 15/12.