No. 3.
1. Love, lave, late, hate.
2. Vest, lest, lost, cost, coat.
3. Cent, dent, dint, dine, dime.
4. Head, read, road, rood, root, foot.
5. Bear, sear, star, stag.
6. Hard, card, cart, cast, cost, lost, loft, soft.
7. Storm, stork, stock, stick, slick, slice, slide,
glide, guide, guile, guilt, quilt, quiet.