pub type U14 = UInt<UInt<UInt<UInt<UTerm, B1>, B1>, B1>, B0>;
struct U14 { pub(crate) msb: UInt<UInt<UInt<UTerm, B1>, B1>, B1>, pub(crate) lsb: B0, }
msb: UInt<UInt<UInt<UTerm, B1>, B1>, B1>
lsb: B0