Generate a Recovery Phrase With a Coin

This is the simplest method: it needs only a fair coin. Each flip supplies one bit, so generate each provisional BIP-39 word from 11 flips. Repeat for 12 or 24 words, then follow the final-word procedure.

Flip the coin 11 times for each word and use this conversion table:

Result	Bit
Heads	0
Tails	1

Read the 11 results from left to right and use the binary words table to match the resulting value to a BIP-39 word.