956r8c 856r8 756r 656r8c 556r8
kf6r8 jf6r if6r8c hf6r8 gf6r
vo5r uo5r8c to5r8 so5r ro5r8c
6x4r8c 5x4r8 4x4r 3x4r8c 2x4r8
h73r8 g73r f73r8c e73r8 d73r