@a:
             3                                                   5
hh:mm:ss.ms  |___________________________________________________|
%H:00:00.500 |                         *                         | 4
%H:00:00.600 |                         *                         | 4
%H:00:00.700 |                         *                         | 4
%H:00:00.800 |                         *                         | 4
%H:00:00.900 |                         *                         | 4
             v___________________________________________________v
             3                                                   5
