1 = 12-bit : 00 = 001= 110 = 211 = 3001 = 1010 = 2011 = 3100 = 4101 = 5110 = 6111 = 7
4-bit : 0000 = 00001 = 10010 = 20011 = 30100 = 40101 = 50110 = 60111 = 71000 = 81001 = 91010 = 101011 = 111100 = 121101 = 131110 = 141111 = 15