| mask == Three = oct { b8 = bit, b7 = bit, b6 = bit, b5 = bit, b4 = bit }
| mask == Two = oct { b8 = bit, b7 = bit, b6 = bit, b5 = bit, b4 = bit, b3 = bit }
| mask == Maskbits.One = oct { b8 = bit, b7 = bit, b6 = bit, b5 = bit, b4 = bit, b3 = bit, b2 = bit }
| mask == Three = oct { b8 = bit, b7 = bit, b6 = bit, b5 = bit, b4 = bit }
| mask == Two = oct { b8 = bit, b7 = bit, b6 = bit, b5 = bit, b4 = bit, b3 = bit }
| mask == Maskbits.One = oct { b8 = bit, b7 = bit, b6 = bit, b5 = bit, b4 = bit, b3 = bit, b2 = bit }