1  _  2  _  3  _  4  _  5  _  6  _  7  _  8  _  8a  _  9  _  10 on a9a9a9  _  11 on 550000 
lines8, 8a, 10 and 11 all different horizontals
lines9 all different speeds, eventually
less subtle ones:
 12  _  13  _  14  _  15  _  16  _  17  _  18 
 for slight changes and to #000011 darkblue backgrounds
 2  _  4  _  5  _  6  _  7