dt4t et4td ft4td4 gt4t ht4td

2j5td 3j5td4 4j5t 5j5td 6j5td4

ra6td4 sa6t ta6td ua6td4 va6t

g16t h16td i16td4 j16t k16td

5r7td 6r7td4 7r7t 8r7td 9r7td4