from typing import *

# extmod/modtrezorcrypto/modtrezorcrypto-bip39.h
def find_word(prefix: str) -> Optional[str]:
    '''
    Return the first word from the wordlist starting with prefix.
    '''

# extmod/modtrezorcrypto/modtrezorcrypto-bip39.h
def complete_word(prefix: str) -> int:
    '''
    Return possible 1-letter suffixes for given word prefix.
    Result is a bitmask, with 'a' on the lowest bit, 'b' on the second lowest, etc.
    '''

# extmod/modtrezorcrypto/modtrezorcrypto-bip39.h
def generate(strength: int) -> str:
    '''
    Generate a mnemonic of given strength (128, 160, 192, 224 and 256 bits).
    '''

# extmod/modtrezorcrypto/modtrezorcrypto-bip39.h
def from_data(data: bytes) -> str:
    '''
    Generate a mnemonic from given data (of 16, 20, 24, 28 and 32 bytes).
    '''

# extmod/modtrezorcrypto/modtrezorcrypto-bip39.h
def check(mnemonic: str) -> bool:
    '''
    Check whether given mnemonic is valid.
    '''

# extmod/modtrezorcrypto/modtrezorcrypto-bip39.h
def seed(mnemonic: str, passphrase: str) -> bytes:
    '''
    Generate seed from mnemonic and passphrase.
    '''