1 2 3 4

table 1

| 1.1 | 1.2 | 1.3 | 1.4 | 1.5 | 1.6 | | 2.1 | | 3.1 | 3.2 | 3.3 | 3.4 | 3.5 | 3.6 |

cell 1.5 has rowspan="2"

table 2

| 1.1 | 1.2 | 1.3 | 1.4 | 1.5 | | 2.1 | | 3.1 | 3.2 | 3.3 | 3.4 | 3.5 | 3.6 |

cell 1.5 has colspan="2" rowspan="2"