R= red Y= yellow B= black;
R
Y Y
R B R
Y R Y Y
R Y R Y R
or if they are numbered
put the ones <8 (1 to 7) instead of the reds (R) and the ones bigger then 8 in the yellow’s place. The * will replace the Black (B).
example:
(1)
(9) (10)
(2) (8) (3)
(11) (4) (12) (13)
(5) (14) (6) (15) (7)