Lesson 12 - Keys : d6x

Test 01 = xxxxx d6dxd xdd66 xxxxx 6x66d 
Test 02 = xd666 6x66d d6ddx 6xxdd d6xxx 
Test 03 = dd6dx 6dxxx xd6xd ddx66 66ddx 
Test 04 = d6xdx xx6xd dxxxd 6xddx 6ddxx 
Test 05 = d6dx6 d66dd xx66x ddxx6 6xxxd 
Test 06 = 666d6 xx6x6 xdxd6 d6dxx 666d6 
Test 07 = d6d6d xddx6 x66dx d6xxx dxx6d 
Test 08 = dd6xd x6dd6 d6x6d d6666 d66dx 
Test 09 = dd6dd 6xd6x dx6dx dxxx6 xd6dd 
Test 10 = 6xd6d x6ddx x6xdx 66dx6 d6x6x