3 or more flags in 5 years, bookended by flagsThis includes 3 in 4s.
The whole point about 3 in 5 is the length of time the group of players had to remain- or return- to a level of greatness required to win a flag.
Look for
WWLLW
WLWLW
WLLWW
And compare to 3 peats.
You can include 4 in 5 too if you want, but key point is longevity of winning in years 1 and 5.
Essendon 1946, 1948, 1950
Melbourne 1955, 1956, 1957, 1959, 1960 (you can make two separate 4-in-5s out of this)
Carlton 1968, 1970, 1972
Geelong 2007, 2009, 2011
Additional runs showing more longevity
Richmond 1967, 1969, 1973, 1974 (4 in 8)
Hawthorn 1983, 1986, 1988, 1989, 1991 (5 in 9)