d12t e12t1 f12t1f g12t h12t1

2r3t1 3r3t1f 4r3t 5r3t1 6r3t1f

ri4t1f si4t ti4t1 ui4t1f vi4t

g94t h94t1 i94t1f j94t k94t1

5z5t1 6z5t1f 7z5t 8z5t1 9z5t1f