func (e *encoding) Encode(x uint64) string {
	b := [12]byte{}
	for i := 0; i < 12; i++ {
		b[11-i] = e.encode[x&0x1f]
		x >>= 5
	}
	return string(b[:])
}
func (e *encoding) Encode(x uint64) string {
	b := [12]byte{}
	for i := 0; i < 12; i++ {
		b[11-i] = e.encode[x&0x1f]
		x >>= 5
	}
	return string(b[:])
}
func ( e * encoding ) Encode ( x uint64 ) string { b := [ 12 ] byte { } for i := 0 ; i < 12 ; i ++ { b [ 11 - i ] = e . encode [ x & 0x1f ] x >>= 5 } return string ( b [ : ] ) }
// Encode bits of 64-bit word into a string.
Encode bits of 64 - bit word into a string .