Tails are possible, how did you think that it is impossible?
Code: Select all
x = 9, y = 7, rule = LifeHistory
.2A$A2DA$ADADA2.2A$.ADADA2.A$3.ADA.A$3.A2DA$4.2A!
My 550yh post!
Edit 1:
Oops, still missing a side. However, hat is possible and is dot with two tails
Edit 2:
Let's prove what erictom333 proved.
1:
B4c
Let's focus on the b4c place:
Code: Select all
x = 3, y = 3, rule = LifeHistory
CBC$3B$CBC!
In order for it to be b4c, the blue cells cannot be on. That means that there is s4e in the still life that contains that in the photonegative, which is impossible.
2:B4e
In a similar way, the blie cells cannot be on, meaning there is s4c in the still life that contains it in the photonegative
Code: Select all
x = 3, y = 3, rule = LifeHistory
BAB$ABA$BAB!
3:B4
The other cells in whatever B4 transitions(the blue cells) cannot be on, meaning teher is s4 in the still life that contains it in the photonegative.
How about b5?
4:B5y
Possible.
Code: Select all
x = 6, y = 5, rule = LifeHistory
2.2A$.A2DA$AD2ADA$.A2DA$2.2A!
5:B5c
Possible.
Code: Select all
x = 5, y = 5, rule = LifeHistory
2.A$.ADA$ADADA$.A2DA$2.2A!
6:
B5i
Impossible to have one because of overpopulation.