Tiger is the start and Dog the close. Add Horse at the middle and the three make Fire.
Together they turn to Fire. Mid-spring and late autumn are 5 steps apart, mirrored across the line between Rat–Ox and Horse–Goat.
Horse is the middle and Dog the close. Add Tiger at the start and the three make Fire.
Earth presses on Water; 2 steps apart (lunar months 11, 9).
Fire feeds Earth, so Snake supports; 5 steps apart (lunar months 4, 9).
Earth feeds Metal, so Dog supports; 2 steps apart (lunar months 7, 9).
Season, hour and direction all coincide (late autumn, 7–9pm, west-northwest). Tiger and Horse fill what is missing.
Earth presses on Water; 1 step apart (lunar months 9, 10).
Lunar months 8 and 9 — 1 step apart.
It completes when Goat, the missing third, joins.
East-southeast against west-northwest, 7–9am against 7–9pm — and Earth against Earth.
It completes when Ox, the missing third, joins.