This is a first for me both tackling a wheel rebuild as well as working on a motorbike so I stand to correction in respect of my terminology/procedures.
Here I’m going to tackle the front wheel, bearing in mind that there are 2 different types of spokes in the front wheel. There is the slightly longer 144mm one, and a shorter one 142mm. In addition to the length of the spoke, the 2 types also have different amounts of bend in the hook, which can be seen more clearly in the second pic.
Correction to previous offset hub story:
The reason for this is that the sharper bend 90° shorter spoke goes on the outside of the hub with its head, which is marked with a bisected triangle, always facing into the hub. It leans over more into the wheel and hence the need for a sharper angle.
The longer spoke with a less acute angle goes inside the hub with its empty triangle head symbol facing outwards, ie all visible spoke heads should be the same symbol.
The hub is always centered with relation to the rim to maintain correct balance and symmetry.
All my spokes with the 90° bend and shorter length were marked with a bisected triangle symbol, however its not to say all short 90° spokes will be marked in this way.