pub type P50 = PInt<U50>;
struct P50 { pub(crate) n: UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B1>, B0>, B0>, B1>, B0>, }
n: UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B1>, B0>, B0>, B1>, B0>