od4piv pd4p qd4pi rd4piv sd4p

d44p e44pi f44piv g44p h44pi

2u5pi 3u5piv 4u5p 5u5pi 6u5piv

rl6piv sl6p tl6pi ul6piv vl6p

gc7p hc7pi ic7piv jc7p kc7pi