du1x eu1x1 fu1x11 gu1x hu1x1

2k2x1 3k2x11 4k2x 5k2x1 6k2x11

rb3x11 sb3x tb3x1 ub3x11 vb3x

g23x h23x1 i23x11 j23x k23x1

5s4x1 6s4x11 7s4x 8s4x1 9s4x11