#define butterfly_width 16
#define butterfly_height 16
static char butterfly_bits[] = {
   0xb3, 0xcd, 0xad, 0xb5, 0x5e, 0x7a, 0x56, 0x6a, 0x5a, 0x5a, 0x5a, 0x5a,
   0x6a, 0x56, 0x2a, 0x54, 0x2a, 0x54, 0x6a, 0x56, 0x5a, 0x5a, 0x5a, 0x5a,
   0x56, 0x6a, 0x5e, 0x7a, 0xed, 0xb7, 0xf3, 0xcf};