old code	code as numbers	passphrase letter	number of letter	new first part of code	new second part of code	new code
th	(20, 8)	e	5	28	13	bm
bm	(2, 13)	c	3	15	16	op
op	(15, 16)	a	1	31	17	eq
eq	(5, 17)	t	20	22	37	vk