89x7t 99x7td aay7 bay7t cay7td
x0y7td y0y7 z0y7t 00y7td 10y7
mrz7 nrz7t orz7td prz7 qrz7t
bi07t ci07td di07 ei07t fi07td
0807td 1807 2807t 3807td 4807