#define grey20_width 16
#define grey20_height 16
static char grey20_bits[] = {
 0x55,0x55,0x88,0x88,0x55,0x55,0x22,0x22,0x55,0x55,0x88,0x88,0x55,0x55,0x22,
 0x22,0x55,0x55,0x88,0x88,0x55,0x55,0x22,0x22,0x55,0x55,0x88,0x88,0x55,0x55,
 0x22,0x22};