5	rifts	5	frits
5	first	4	tris
4	stir	4	sift
4	rift	4	rifs
4	frit	4	fits
4	fist	4	firs
3	tis	3	sri
3	sit	3	sir
3	rif	3	its
3	ist	3	ifs
3	fit	3	fir
2	ti	2	si
2	it	2	is
2	if	2	fi