Letter on position 1 (r) changed: 13 words bigs cigs digs figs gigs jigs ligs migs pigs tigs vigs wigs zigs Letter on position 2 (i) changed: 3 words rags regs rugs Letter on position 3 (g) changed: 8 words rias ribs rids rifs rims rins rips rits Letter on position 4 (s) changed: 1 word rigg