Colour Combos

Combos of 4:
{w}{u}{b}{r} {w}{b}{r}{g} {w}{u}{r}{g} {w}{u}{b}{g}
{u}{b}{r}{g}
Combos of 3:
{g}{u}{w} {g}{u}{r} {g}{w}{r} {u}{w}{b} {u}{b}{r}
{g}{u}{b} {g}{w}{b} {g}{b}{r} {u}{w}{r} {w}{b}{r}
Combos of 2:
{r/w}{r}{w} {w/u}{w}{u} {u/r}{u}{r} {r/g}{r}{g} {g/u}{g}{u}
{u/b}{u}{b} {b/g}{b}{g} {g/w}{g}{w} {w/b}{w}{b} {b/r}{b}{r}
https://f.jwwb.nl/public/n/v/h/temp-cfmplvmawsuopiqnudsf/1575406827470.png