Tabel in care am folosit colspan si rowspan
R1 C1
R1 C2
R1 C3
R1 C4
R2 C1+C2
R2 C3
R2 C4
R3 C1 + R4 C1
R3 C2
R3 C3
R3 C4
R4 C2
R4 C3
R4 C4