Header in ALV Report

Hi All,

I want to print a report in the following manner:

DATE:

CLASS GROUP :

MATNR CLASS ADSIZE

123 c col1

124 c col2

156 c col2

DATE:

CLASS GROUP :

MATNR CLASS ADSIZE

125 a col3

128 a col4

150 a col5

How do i do it...I am planning to do it with REUSE_ALV_LIST _DISPLAY...but i dont know how to print the header..plz help