@a[one]:
             0                                                   5
hh:mm:ss.ms  |___________________________________________________|
%H:00:00.000 *                                                   | 0
%H:00:00.100 |                                                   * 5
%H:00:00.200 |                                                   * 5
%H:00:00.300 |                                                   * 5
%H:00:00.400 |                                                   * 5
%H:00:00.500 |                                                   | -
%H:00:00.600 |                                                   | -
%H:00:00.700 |                                                   | -
%H:00:00.800 |                                                   | -
%H:00:00.900 |                                                   | -
             v___________________________________________________v
             0                                                   5

@a[two]:
             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

