6	boffed	5	offed
5	deffo	4	feod
4	doff	4	boff
4	bode	3	off
3	ode	3	obe
3	foe	3	fob
3	fed	3	eff
3	doe	3	dob
3	def	3	deb
3	bod	3	bff
3	bed	2	of
2	oe	2	od
2	fe	2	eo
2	ef	2	ed
2	do	2	de
2	bo	2	be