7	ripping	6	riping
6	piping	5	piing
5	iring	4	ring
4	prig	4	pirn
4	pipi	4	ping
4	grip	4	grin
4	girn	3	rip
3	rin	3	rig
3	pir	3	pip
3	pin	3	pig
3	nip	3	gip
3	gin	2	pi
2	in	2	gi